Finding the Fourth Proportional to 22,736.38, 31,380.56 and 12,800.38

Step by Step Solution

1. Step 1: Write the proportion equation
   22,736.38 : 31,380.56 = 12,800.38 : x
2. Step 2: Convert to fraction form
   22,736.38/31,380.56 = 12,800.38/x
3. Step 3: Cross multiply
   22,736.38x = 31,380.56 × 12,800.38
4. Step 4: Simplify right side
   22,736.38x = 401,683,092.61
5. Step 5: Solve for x
   x = 401,683,092.61/22,736.38
6. Step 6: Final answer
   x = 17,666.98