Finding the Fourth Proportional to 22,496.20, 31,044.60 and 12,424.42

Step by Step Solution

1. Step 1: Write the proportion equation
   22,496.20 : 31,044.60 = 12,424.42 : x
2. Step 2: Convert to fraction form
   22,496.20/31,044.60 = 12,424.42/x
3. Step 3: Cross multiply
   22,496.20x = 31,044.60 × 12,424.42
4. Step 4: Simplify right side
   22,496.20x = 385,711,187.94
5. Step 5: Solve for x
   x = 385,711,187.94/22,496.20
6. Step 6: Final answer
   x = 17,145.62