Finding the Fourth Proportional to 22,469.91, 31,008.25 and 12,398.43

Step by Step Solution

1. Step 1: Write the proportion equation
   22,469.91 : 31,008.25 = 12,398.43 : x
2. Step 2: Convert to fraction form
   22,469.91/31,008.25 = 12,398.43/x
3. Step 3: Cross multiply
   22,469.91x = 31,008.25 × 12,398.43
4. Step 4: Simplify right side
   22,469.91x = 384,453,617.05
5. Step 5: Solve for x
   x = 384,453,617.05/22,469.91
6. Step 6: Final answer
   x = 17,109.71