Finding the Fourth Proportional to 8,877.34, 12,255.16 and 5,521.23

Step by Step Solution

1. Step 1: Write the proportion equation
   8,877.34 : 12,255.16 = 5,521.23 : x
2. Step 2: Convert to fraction form
   8,877.34/12,255.16 = 5,521.23/x
3. Step 3: Cross multiply
   8,877.34x = 12,255.16 × 5,521.23
4. Step 4: Simplify right side
   8,877.34x = 67,663,557.05
5. Step 5: Solve for x
   x = 67,663,557.05/8,877.34
6. Step 6: Final answer
   x = 7,622.06