Can I sell my half of the real estate I inherited before probate is complete?

After going on almost four years, the estate is still in probate and my brother (executor) is not making any attempt at filing any necessary papers to gain the letters of administration. Is there a way that I can sell my portion of the estate's real estate (that is getting worst every day) that was left to my brother and myself while the estate is still in probate? My brother doesn't show up in court when scheduled, the court has lost my papers when I filed to be executor (multiple times), I want out, but not without selling my portion (as co-beneficiary with my brother) of the property listed in the Will. Is there a way to sell my portion of the property before probate is completed? I honestly cannot see the probate being completed any time soon and the property will not be worth anything if I leave it up to my brother.