Can my relatives list land that I own with them without my consent?

Question Details: I own land with 4 other relatives that my grandmother originally left in 5 equal parts to her 5 children. I have consented to listing this property several times before as one of my relatives has relisted over and over, each time reducing the price, to no avail. This year I heard nothing and found the land listed 3 months after our last listing expired at a new reduced price. I was never called or contacted in any way this year. In the past I have pointed out that repeated price changes have not resulted in a sale but a new broker might. They have changed brokers once; the original broker was in his 80's when they originally listed it with him and he died during his last listing with us at 92. Only then did they take my advice and list with a larger commercial land firm. I want the land to sell obviously at any price but legally don't I have to be consulted on repeated listing and especially price changes?

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