Any person who, being entrusted, either solely or jointly with any other person, with any power of attorney for the sale, mortgage, pledge, or other disposition of any property, real or personal, dishonestly sells, mortgages, pledges, or otherwise disposes of the same or any part thereof, or dishonestly converts the proceeds of any sale, mortgage, pledge, or other disposition of such property, or any part of such proceeds, to some purpose other than that for which he was entrusted with such power of attorney, shall be deemed to have stolen the property so mortgaged, pledged, or disposed of, or converted, if the same is capable of being stolen, or money to the value thereof if otherwise.