Finding the Fourth Proportional to 3,658.20, 5,047.83 and 2,165.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,658.20 : 5,047.83 = 2,165.52 : x
2. Step 2: Convert to fraction form
   3,658.20/5,047.83 = 2,165.52/x
3. Step 3: Cross multiply
   3,658.20x = 5,047.83 × 2,165.52
4. Step 4: Simplify right side
   3,658.20x = 10,931,176.82
5. Step 5: Solve for x
   x = 10,931,176.82/3,658.20
6. Step 6: Final answer
   x = 2,988.13