Finding the Fourth Proportional to 16,345.80, 22,557.42 and 9,272.16

Step by Step Solution

1. Step 1: Write the proportion equation
   16,345.80 : 22,557.42 = 9,272.16 : x
2. Step 2: Convert to fraction form
   16,345.80/22,557.42 = 9,272.16/x
3. Step 3: Cross multiply
   16,345.80x = 22,557.42 × 9,272.16
4. Step 4: Simplify right side
   16,345.80x = 209,156,007.43
5. Step 5: Solve for x
   x = 209,156,007.43/16,345.80
6. Step 6: Final answer
   x = 12,795.70