Finding the Fourth Proportional to 16,218.74, 24,284.30 and 8,411.15

Step by Step Solution

1. Step 1: Write the proportion equation
   16,218.74 : 24,284.30 = 8,411.15 : x
2. Step 2: Convert to fraction form
   16,218.74/24,284.30 = 8,411.15/x
3. Step 3: Cross multiply
   16,218.74x = 24,284.30 × 8,411.15
4. Step 4: Simplify right side
   16,218.74x = 204,258,908.60
5. Step 5: Solve for x
   x = 204,258,908.60/16,218.74
6. Step 6: Final answer
   x = 12,594.00