Finding the Fourth Proportional to 22,800.72, 31,464.45 and 12,730.10

Step by Step Solution

1. Step 1: Write the proportion equation
   22,800.72 : 31,464.45 = 12,730.10 : x
2. Step 2: Convert to fraction form
   22,800.72/31,464.45 = 12,730.10/x
3. Step 3: Cross multiply
   22,800.72x = 31,464.45 × 12,730.10
4. Step 4: Simplify right side
   22,800.72x = 400,545,437.62
5. Step 5: Solve for x
   x = 400,545,437.62/22,800.72
6. Step 6: Final answer
   x = 17,567.22