Finding the Fourth Proportional to 5,488.12, 7,522.77 and 5,414.28

Step by Step Solution

1. Step 1: Write the proportion equation
   5,488.12 : 7,522.77 = 5,414.28 : x
2. Step 2: Convert to fraction form
   5,488.12/7,522.77 = 5,414.28/x
3. Step 3: Cross multiply
   5,488.12x = 7,522.77 × 5,414.28
4. Step 4: Simplify right side
   5,488.12x = 40,730,383.16
5. Step 5: Solve for x
   x = 40,730,383.16/5,488.12
6. Step 6: Final answer
   x = 7,421.55