Finding the Fourth Proportional to 22,563.12, 31,143.39 and 13,133.52

Step by Step Solution

1. Step 1: Write the proportion equation
   22,563.12 : 31,143.39 = 13,133.52 : x
2. Step 2: Convert to fraction form
   22,563.12/31,143.39 = 13,133.52/x
3. Step 3: Cross multiply
   22,563.12x = 31,143.39 × 13,133.52
4. Step 4: Simplify right side
   22,563.12x = 409,022,335.43
5. Step 5: Solve for x
   x = 409,022,335.43/22,563.12
6. Step 6: Final answer
   x = 18,127.92