Finding the Fourth Proportional to 22,567, 31,142.50 and 13,141.88

Step by Step Solution

1. Step 1: Write the proportion equation
   22,567 : 31,142.50 = 13,141.88 : x
2. Step 2: Convert to fraction form
   22,567/31,142.50 = 13,141.88/x
3. Step 3: Cross multiply
   22,567x = 31,142.50 × 13,141.88
4. Step 4: Simplify right side
   22,567x = 409,270,997.90
5. Step 5: Solve for x
   x = 409,270,997.90/22,567
6. Step 6: Final answer
   x = 18,135.82