Finding the Fourth Proportional to 22,479.85, 31,022.12 and 12,408.22

Step by Step Solution

1. Step 1: Write the proportion equation
   22,479.85 : 31,022.12 = 12,408.22 : x
2. Step 2: Convert to fraction form
   22,479.85/31,022.12 = 12,408.22/x
3. Step 3: Cross multiply
   22,479.85x = 31,022.12 × 12,408.22
4. Step 4: Simplify right side
   22,479.85x = 384,929,243.29
5. Step 5: Solve for x
   x = 384,929,243.29/22,479.85
6. Step 6: Final answer
   x = 17,123.30