Finding the Fourth Proportional to 16,617.57, 24,917 and 5,518.31

Step by Step Solution

1. Step 1: Write the proportion equation
   16,617.57 : 24,917 = 5,518.31 : x
2. Step 2: Convert to fraction form
   16,617.57/24,917 = 5,518.31/x
3. Step 3: Cross multiply
   16,617.57x = 24,917 × 5,518.31
4. Step 4: Simplify right side
   16,617.57x = 137,499,730.27
5. Step 5: Solve for x
   x = 137,499,730.27/16,617.57
6. Step 6: Final answer
   x = 8,274.36