Finding the Fourth Proportional to 22,468.28, 31,005.80 and 12,397.68

Step by Step Solution

1. Step 1: Write the proportion equation
   22,468.28 : 31,005.80 = 12,397.68 : x
2. Step 2: Convert to fraction form
   22,468.28/31,005.80 = 12,397.68/x
3. Step 3: Cross multiply
   22,468.28x = 31,005.80 × 12,397.68
4. Step 4: Simplify right side
   22,468.28x = 384,399,986.54
5. Step 5: Solve for x
   x = 384,399,986.54/22,468.28
6. Step 6: Final answer
   x = 17,108.56