Finding the Fourth Proportional to 22,543.32, 31,109.49 and 12,471

Step by Step Solution

1. Step 1: Write the proportion equation
   22,543.32 : 31,109.49 = 12,471 : x
2. Step 2: Convert to fraction form
   22,543.32/31,109.49 = 12,471/x
3. Step 3: Cross multiply
   22,543.32x = 31,109.49 × 12,471
4. Step 4: Simplify right side
   22,543.32x = 387,966,449.79
5. Step 5: Solve for x
   x = 387,966,449.79/22,543.32
6. Step 6: Final answer
   x = 17,209.82