Finding the Fourth Proportional to 5,756.56, 7,942.72 and 3,399.05

Step by Step Solution

1. Step 1: Write the proportion equation
   5,756.56 : 7,942.72 = 3,399.05 : x
2. Step 2: Convert to fraction form
   5,756.56/7,942.72 = 3,399.05/x
3. Step 3: Cross multiply
   5,756.56x = 7,942.72 × 3,399.05
4. Step 4: Simplify right side
   5,756.56x = 26,997,702.42
5. Step 5: Solve for x
   x = 26,997,702.42/5,756.56
6. Step 6: Final answer
   x = 4,689.90