Finding the Fourth Proportional to 22,087.67, 30,476.85 and 13,137.38

Step by Step Solution

1. Step 1: Write the proportion equation
   22,087.67 : 30,476.85 = 13,137.38 : x
2. Step 2: Convert to fraction form
   22,087.67/30,476.85 = 13,137.38/x
3. Step 3: Cross multiply
   22,087.67x = 30,476.85 × 13,137.38
4. Step 4: Simplify right side
   22,087.67x = 400,385,807.27
5. Step 5: Solve for x
   x = 400,385,807.27/22,087.67
6. Step 6: Final answer
   x = 18,127.12