Finding the Fourth Proportional to 3,639.72, 5,022.54 and 2,067.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,639.72 : 5,022.54 = 2,067.50 : x
2. Step 2: Convert to fraction form
   3,639.72/5,022.54 = 2,067.50/x
3. Step 3: Cross multiply
   3,639.72x = 5,022.54 × 2,067.50
4. Step 4: Simplify right side
   3,639.72x = 10,384,101.45
5. Step 5: Solve for x
   x = 10,384,101.45/3,639.72
6. Step 6: Final answer
   x = 2,852.99