Finding the Fourth Proportional to 16,517.30, 24,779.15 and 8,309.30

Step by Step Solution

1. Step 1: Write the proportion equation
   16,517.30 : 24,779.15 = 8,309.30 : x
2. Step 2: Convert to fraction form
   16,517.30/24,779.15 = 8,309.30/x
3. Step 3: Cross multiply
   16,517.30x = 24,779.15 × 8,309.30
4. Step 4: Simplify right side
   16,517.30x = 205,897,391.10
5. Step 5: Solve for x
   x = 205,897,391.10/16,517.30
6. Step 6: Final answer
   x = 12,465.56