Finding the Fourth Proportional to 22,565.39, 31,142.93 and 13,133.94

Step by Step Solution

1. Step 1: Write the proportion equation
   22,565.39 : 31,142.93 = 13,133.94 : x
2. Step 2: Convert to fraction form
   22,565.39/31,142.93 = 13,133.94/x
3. Step 3: Cross multiply
   22,565.39x = 31,142.93 × 13,133.94
4. Step 4: Simplify right side
   22,565.39x = 409,029,308.37
5. Step 5: Solve for x
   x = 409,029,308.37/22,565.39
6. Step 6: Final answer
   x = 18,126.41