Can a Father transfer all his property to sons and leave daugthers with nothing

we are two sisters and two brothers. My Father, when alive, transferred the property to my two brothers when they were minors at age of 9 years and 7 years respectively. The property remained in my brothers name and my father died. Now we both sisters are claiming the share in property as it was of our fathers. But my brothers are saying that the property belongs to them. My question is , how can the property belongs to my brothers, though it was transferred to their name when they were only minors??? Please advise what does sharia says about this?? and how we solve this distribution issue amongst us in an amicable manner???