Finding the Fourth Proportional to 16,404.57, 22,640.13 and 9,234.69

Step by Step Solution

1. Step 1: Write the proportion equation
   16,404.57 : 22,640.13 = 9,234.69 : x
2. Step 2: Convert to fraction form
   16,404.57/22,640.13 = 9,234.69/x
3. Step 3: Cross multiply
   16,404.57x = 22,640.13 × 9,234.69
4. Step 4: Simplify right side
   16,404.57x = 209,074,582.11
5. Step 5: Solve for x
   x = 209,074,582.11/16,404.57
6. Step 6: Final answer
   x = 12,744.90