Finding the Fourth Proportional to 3,639.50, 5,022.30 and 2,147.33

Step by Step Solution

1. Step 1: Write the proportion equation
   3,639.50 : 5,022.30 = 2,147.33 : x
2. Step 2: Convert to fraction form
   3,639.50/5,022.30 = 2,147.33/x
3. Step 3: Cross multiply
   3,639.50x = 5,022.30 × 2,147.33
4. Step 4: Simplify right side
   3,639.50x = 10,784,535.46
5. Step 5: Solve for x
   x = 10,784,535.46/3,639.50
6. Step 6: Final answer
   x = 2,963.19