Finding the Fourth Proportional to 22,469.47, 31,008.51 and 12,398.55

Step by Step Solution

1. Step 1: Write the proportion equation
   22,469.47 : 31,008.51 = 12,398.55 : x
2. Step 2: Convert to fraction form
   22,469.47/31,008.51 = 12,398.55/x
3. Step 3: Cross multiply
   22,469.47x = 31,008.51 × 12,398.55
4. Step 4: Simplify right side
   22,469.47x = 384,460,704.10
5. Step 5: Solve for x
   x = 384,460,704.10/22,469.47
6. Step 6: Final answer
   x = 17,110.36