Finding the Fourth Proportional to 3,855.55, 5,789.85 and 3,658.27

Step by Step Solution

1. Step 1: Write the proportion equation
   3,855.55 : 5,789.85 = 3,658.27 : x
2. Step 2: Convert to fraction form
   3,855.55/5,789.85 = 3,658.27/x
3. Step 3: Cross multiply
   3,855.55x = 5,789.85 × 3,658.27
4. Step 4: Simplify right side
   3,855.55x = 21,180,834.56
5. Step 5: Solve for x
   x = 21,180,834.56/3,855.55
6. Step 6: Final answer
   x = 5,493.60