Podrias probar algo asi:
Código PHP:
function money2num( $var ) {
$var = str_replace( array( "$", "," ), "", $var );
return (float) $var;
}
$x=$rs_his_pro->Fields('9');
$p=$rs_his_pro->Fields('14');
$x = money2num( $x );
$p = money2num( $p );
echo money_format( $x * $p );
Saludos.