Finding the Fourth Proportional to 22,648.29, 31,249.60 and 13,695.60

Step by Step Solution

1. Step 1: Write the proportion equation
   22,648.29 : 31,249.60 = 13,695.60 : x
2. Step 2: Convert to fraction form
   22,648.29/31,249.60 = 13,695.60/x
3. Step 3: Cross multiply
   22,648.29x = 31,249.60 × 13,695.60
4. Step 4: Simplify right side
   22,648.29x = 427,981,953.28
5. Step 5: Solve for x
   x = 427,981,953.28/22,648.29
6. Step 6: Final answer
   x = 18,896.88