Finding the Fourth Proportional to 6,111.88, 8,434.24 and 3,459.20

Step by Step Solution

1. Step 1: Write the proportion equation
   6,111.88 : 8,434.24 = 3,459.20 : x
2. Step 2: Convert to fraction form
   6,111.88/8,434.24 = 3,459.20/x
3. Step 3: Cross multiply
   6,111.88x = 8,434.24 × 3,459.20
4. Step 4: Simplify right side
   6,111.88x = 29,175,723.01
5. Step 5: Solve for x
   x = 29,175,723.01/6,111.88
6. Step 6: Final answer
   x = 4,773.61