Finding the Fourth Proportional to 16,329.72, 24,420.78 and 12,581.04

Step by Step Solution

1. Step 1: Write the proportion equation
   16,329.72 : 24,420.78 = 12,581.04 : x
2. Step 2: Convert to fraction form
   16,329.72/24,420.78 = 12,581.04/x
3. Step 3: Cross multiply
   16,329.72x = 24,420.78 × 12,581.04
4. Step 4: Simplify right side
   16,329.72x = 307,238,810.01
5. Step 5: Solve for x
   x = 307,238,810.01/16,329.72
6. Step 6: Final answer
   x = 18,814.70