Finding the Fourth Proportional to 22,688.52, 31,309.56 and 12,616.98

Step by Step Solution

1. Step 1: Write the proportion equation
   22,688.52 : 31,309.56 = 12,616.98 : x
2. Step 2: Convert to fraction form
   22,688.52/31,309.56 = 12,616.98/x
3. Step 3: Cross multiply
   22,688.52x = 31,309.56 × 12,616.98
4. Step 4: Simplify right side
   22,688.52x = 395,032,092.33
5. Step 5: Solve for x
   x = 395,032,092.33/22,688.52
6. Step 6: Final answer
   x = 17,411.10