Finding the Fourth Proportional to 16,320.22, 22,520.57 and 9,149.09

Step by Step Solution

1. Step 1: Write the proportion equation
   16,320.22 : 22,520.57 = 9,149.09 : x
2. Step 2: Convert to fraction form
   16,320.22/22,520.57 = 9,149.09/x
3. Step 3: Cross multiply
   16,320.22x = 22,520.57 × 9,149.09
4. Step 4: Simplify right side
   16,320.22x = 206,042,563.43
5. Step 5: Solve for x
   x = 206,042,563.43/16,320.22
6. Step 6: Final answer
   x = 12,624.99