Finding the Fourth Proportional to 22,481.31, 31,022.61 and 12,408.12

Step by Step Solution

1. Step 1: Write the proportion equation
   22,481.31 : 31,022.61 = 12,408.12 : x
2. Step 2: Convert to fraction form
   22,481.31/31,022.61 = 12,408.12/x
3. Step 3: Cross multiply
   22,481.31x = 31,022.61 × 12,408.12
4. Step 4: Simplify right side
   22,481.31x = 384,932,267.59
5. Step 5: Solve for x
   x = 384,932,267.59/22,481.31
6. Step 6: Final answer
   x = 17,122.32