How is the sum of 25,000 to be distributed among one son and three daughters?

If the heirs are limited to those mentioned, the inheritance is to be distributed such that the son receives 10,000, and each daughter receives 5,000. It must be noted that matters of inheritance are extremely serious and complex, and a mere fatwa is insufficient. Rather, the matter must be presented to the Sharia courts for investigation, as there might be another heir, or bequests, or debts, or other rights that take precedence over the rights of the heirs.