The Furniture Warehouse pays its sales representatives weekly on the following incremental commission schedule. Calculate the weekly gross pay for the following sales reps. Sales Volume Commission Rate $0-$10,000 10% $10,001-$25,000 15% Over $25,000 20% Adam sold $5,123 one week. His total commission for the week was: $ Bianca sold $14,335 one week. Her total commission for the week was: $ Carlos sold $38,456 one week. 

What was his total commission for the week ?