Finding the Fourth Proportional to 5,488.02, 8,220.15 and 3,408.53

Step by Step Solution

1. Step 1: Write the proportion equation
   5,488.02 : 8,220.15 = 3,408.53 : x
2. Step 2: Convert to fraction form
   5,488.02/8,220.15 = 3,408.53/x
3. Step 3: Cross multiply
   5,488.02x = 8,220.15 × 3,408.53
4. Step 4: Simplify right side
   5,488.02x = 28,018,586.78
5. Step 5: Solve for x
   x = 28,018,586.78/5,488.02
6. Step 6: Final answer
   x = 5,105.41