Finding the Fourth Proportional to 6,057.78, 8,359.91 and 3,405.43

Step by Step Solution

1. Step 1: Write the proportion equation
   6,057.78 : 8,359.91 = 3,405.43 : x
2. Step 2: Convert to fraction form
   6,057.78/8,359.91 = 3,405.43/x
3. Step 3: Cross multiply
   6,057.78x = 8,359.91 × 3,405.43
4. Step 4: Simplify right side
   6,057.78x = 28,469,088.31
5. Step 5: Solve for x
   x = 28,469,088.31/6,057.78
6. Step 6: Final answer
   x = 4,699.59