Finding the Fourth Proportional to 22,567.82, 31,146.29 and 13,136.38

Step by Step Solution

1. Step 1: Write the proportion equation
   22,567.82 : 31,146.29 = 13,136.38 : x
2. Step 2: Convert to fraction form
   22,567.82/31,146.29 = 13,136.38/x
3. Step 3: Cross multiply
   22,567.82x = 31,146.29 × 13,136.38
4. Step 4: Simplify right side
   22,567.82x = 409,149,406.74
5. Step 5: Solve for x
   x = 409,149,406.74/22,567.82
6. Step 6: Final answer
   x = 18,129.77