Finding the Fourth Proportional to 3,988.04, 5,975.15 and 3,640.82

Step by Step Solution

1. Step 1: Write the proportion equation
   3,988.04 : 5,975.15 = 3,640.82 : x
2. Step 2: Convert to fraction form
   3,988.04/5,975.15 = 3,640.82/x
3. Step 3: Cross multiply
   3,988.04x = 5,975.15 × 3,640.82
4. Step 4: Simplify right side
   3,988.04x = 21,754,397.54
5. Step 5: Solve for x
   x = 21,754,397.54/3,988.04
6. Step 6: Final answer
   x = 5,454.92