Finding the Fourth Proportional to 22,567.74, 31,146.03 and 13,142.22

Step by Step Solution

1. Step 1: Write the proportion equation
   22,567.74 : 31,146.03 = 13,142.22 : x
2. Step 2: Convert to fraction form
   22,567.74/31,146.03 = 13,142.22/x
3. Step 3: Cross multiply
   22,567.74x = 31,146.03 × 13,142.22
4. Step 4: Simplify right side
   22,567.74x = 409,327,978.39
5. Step 5: Solve for x
   x = 409,327,978.39/22,567.74
6. Step 6: Final answer
   x = 18,137.75