Finding the Fourth Proportional to 8,266.28, 12,385.32 and 5,488.52

Step by Step Solution

1. Step 1: Write the proportion equation
   8,266.28 : 12,385.32 = 5,488.52 : x
2. Step 2: Convert to fraction form
   8,266.28/12,385.32 = 5,488.52/x
3. Step 3: Cross multiply
   8,266.28x = 12,385.32 × 5,488.52
4. Step 4: Simplify right side
   8,266.28x = 67,977,076.53
5. Step 5: Solve for x
   x = 67,977,076.53/8,266.28
6. Step 6: Final answer
   x = 8,223.42