Finding the Fourth Proportional to 22,878.52, 31,572.78 and 12,942.52

Step by Step Solution

1. Step 1: Write the proportion equation
   22,878.52 : 31,572.78 = 12,942.52 : x
2. Step 2: Convert to fraction form
   22,878.52/31,572.78 = 12,942.52/x
3. Step 3: Cross multiply
   22,878.52x = 31,572.78 × 12,942.52
4. Step 4: Simplify right side
   22,878.52x = 408,631,336.61
5. Step 5: Solve for x
   x = 408,631,336.61/22,878.52
6. Step 6: Final answer
   x = 17,860.92