Finding the Fourth Proportional to 6,057.36, 8,358.72 and 3,405.15

Step by Step Solution

1. Step 1: Write the proportion equation
   6,057.36 : 8,358.72 = 3,405.15 : x
2. Step 2: Convert to fraction form
   6,057.36/8,358.72 = 3,405.15/x
3. Step 3: Cross multiply
   6,057.36x = 8,358.72 × 3,405.15
4. Step 4: Simplify right side
   6,057.36x = 28,462,695.41
5. Step 5: Solve for x
   x = 28,462,695.41/6,057.36
6. Step 6: Final answer
   x = 4,698.86