Finding the Fourth Proportional to 6,114.76, 8,442.57 and 4,128.10

Step by Step Solution

1. Step 1: Write the proportion equation
   6,114.76 : 8,442.57 = 4,128.10 : x
2. Step 2: Convert to fraction form
   6,114.76/8,442.57 = 4,128.10/x
3. Step 3: Cross multiply
   6,114.76x = 8,442.57 × 4,128.10
4. Step 4: Simplify right side
   6,114.76x = 34,851,773.22
5. Step 5: Solve for x
   x = 34,851,773.22/6,114.76
6. Step 6: Final answer
   x = 5,699.61