Finding the Fourth Proportional to 22,807.31, 31,473.48 and 12,735.47

Step by Step Solution

1. Step 1: Write the proportion equation
   22,807.31 : 31,473.48 = 12,735.47 : x
2. Step 2: Convert to fraction form
   22,807.31/31,473.48 = 12,735.47/x
3. Step 3: Cross multiply
   22,807.31x = 31,473.48 × 12,735.47
4. Step 4: Simplify right side
   22,807.31x = 400,829,639.02
5. Step 5: Solve for x
   x = 400,829,639.02/22,807.31
6. Step 6: Final answer
   x = 17,574.61