Finding the Fourth Proportional to 3,639.05, 5,022.50 and 2,147.34

Step by Step Solution

1. Step 1: Write the proportion equation
   3,639.05 : 5,022.50 = 2,147.34 : x
2. Step 2: Convert to fraction form
   3,639.05/5,022.50 = 2,147.34/x
3. Step 3: Cross multiply
   3,639.05x = 5,022.50 × 2,147.34
4. Step 4: Simplify right side
   3,639.05x = 10,784,979.30
5. Step 5: Solve for x
   x = 10,784,979.30/3,639.05
6. Step 6: Final answer
   x = 2,963.68