Finding the Fourth Proportional to 16,581.66, 24,835.98 and 10,720.50

Step by Step Solution

1. Step 1: Write the proportion equation
   16,581.66 : 24,835.98 = 10,720.50 : x
2. Step 2: Convert to fraction form
   16,581.66/24,835.98 = 10,720.50/x
3. Step 3: Cross multiply
   16,581.66x = 24,835.98 × 10,720.50
4. Step 4: Simplify right side
   16,581.66x = 266,254,123.59
5. Step 5: Solve for x
   x = 266,254,123.59/16,581.66
6. Step 6: Final answer
   x = 16,057.15