Finding the Fourth Proportional to 16,611.25, 24,921.08 and 5,518.00

Step by Step Solution

1. Step 1: Write the proportion equation
   16,611.25 : 24,921.08 = 5,518.00 : x
2. Step 2: Convert to fraction form
   16,611.25/24,921.08 = 5,518.00/x
3. Step 3: Cross multiply
   16,611.25x = 24,921.08 × 5,518.00
4. Step 4: Simplify right side
   16,611.25x = 137,514,434.55
5. Step 5: Solve for x
   x = 137,514,434.55/16,611.25
6. Step 6: Final answer
   x = 8,278.39