Finding the Fourth Proportional to 5,757.48, 7,942.05 and 3,986.01

Step by Step Solution

1. Step 1: Write the proportion equation
   5,757.48 : 7,942.05 = 3,986.01 : x
2. Step 2: Convert to fraction form
   5,757.48/7,942.05 = 3,986.01/x
3. Step 3: Cross multiply
   5,757.48x = 7,942.05 × 3,986.01
4. Step 4: Simplify right side
   5,757.48x = 31,657,090.72
5. Step 5: Solve for x
   x = 31,657,090.72/5,757.48
6. Step 6: Final answer
   x = 5,498.43