Finding the Fourth Proportional to 22,755.95, 31,404.18 and 12,684.39

Step by Step Solution

1. Step 1: Write the proportion equation
   22,755.95 : 31,404.18 = 12,684.39 : x
2. Step 2: Convert to fraction form
   22,755.95/31,404.18 = 12,684.39/x
3. Step 3: Cross multiply
   22,755.95x = 31,404.18 × 12,684.39
4. Step 4: Simplify right side
   22,755.95x = 398,342,866.75
5. Step 5: Solve for x
   x = 398,342,866.75/22,755.95
6. Step 6: Final answer
   x = 17,505.00