Finding the Fourth Proportional to 3,773.61, 5,660.37 and 2,658.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,773.61 : 5,660.37 = 2,658.42 : x
2. Step 2: Convert to fraction form
   3,773.61/5,660.37 = 2,658.42/x
3. Step 3: Cross multiply
   3,773.61x = 5,660.37 × 2,658.42
4. Step 4: Simplify right side
   3,773.61x = 15,047,640.82
5. Step 5: Solve for x
   x = 15,047,640.82/3,773.61
6. Step 6: Final answer
   x = 3,987.60