Finding the Fourth Proportional to 11,258.82, 16,899.12 and 8,328.24

Step by Step Solution

1. Step 1: Write the proportion equation
   11,258.82 : 16,899.12 = 8,328.24 : x
2. Step 2: Convert to fraction form
   11,258.82/16,899.12 = 8,328.24/x
3. Step 3: Cross multiply
   11,258.82x = 16,899.12 × 8,328.24
4. Step 4: Simplify right side
   11,258.82x = 140,739,927.15
5. Step 5: Solve for x
   x = 140,739,927.15/11,258.82
6. Step 6: Final answer
   x = 12,500.42