Finding the Fourth Proportional to 8,876.68, 12,255.98 and 5,521

Step by Step Solution

1. Step 1: Write the proportion equation
   8,876.68 : 12,255.98 = 5,521 : x
2. Step 2: Convert to fraction form
   8,876.68/12,255.98 = 5,521/x
3. Step 3: Cross multiply
   8,876.68x = 12,255.98 × 5,521
4. Step 4: Simplify right side
   8,876.68x = 67,665,265.58
5. Step 5: Solve for x
   x = 67,665,265.58/8,876.68
6. Step 6: Final answer
   x = 7,622.81