Finding the Fourth Proportional to 3,871.14, 5,813.78 and 3,545.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,871.14 : 5,813.78 = 3,545.83 : x
2. Step 2: Convert to fraction form
   3,871.14/5,813.78 = 3,545.83/x
3. Step 3: Cross multiply
   3,871.14x = 5,813.78 × 3,545.83
4. Step 4: Simplify right side
   3,871.14x = 20,614,632.37
5. Step 5: Solve for x
   x = 20,614,632.37/3,871.14
6. Step 6: Final answer
   x = 5,325.21