Finding the Fourth Proportional to 22,544.15, 31,108.88 and 12,981.49

Step by Step Solution

1. Step 1: Write the proportion equation
   22,544.15 : 31,108.88 = 12,981.49 : x
2. Step 2: Convert to fraction form
   22,544.15/31,108.88 = 12,981.49/x
3. Step 3: Cross multiply
   22,544.15x = 31,108.88 × 12,981.49
4. Step 4: Simplify right side
   22,544.15x = 403,839,569.31
5. Step 5: Solve for x
   x = 403,839,569.31/22,544.15
6. Step 6: Final answer
   x = 17,913.28