Finding the Fourth Proportional to 16,621.72, 22,932.90 and 9,451.09

Step by Step Solution

1. Step 1: Write the proportion equation
   16,621.72 : 22,932.90 = 9,451.09 : x
2. Step 2: Convert to fraction form
   16,621.72/22,932.90 = 9,451.09/x
3. Step 3: Cross multiply
   16,621.72x = 22,932.90 × 9,451.09
4. Step 4: Simplify right side
   16,621.72x = 216,740,901.86
5. Step 5: Solve for x
   x = 216,740,901.86/16,621.72
6. Step 6: Final answer
   x = 13,039.62