Finding the Fourth Proportional to 5,543.56, 7,639.59 and 3,968.92

Step by Step Solution

1. Step 1: Write the proportion equation
   5,543.56 : 7,639.59 = 3,968.92 : x
2. Step 2: Convert to fraction form
   5,543.56/7,639.59 = 3,968.92/x
3. Step 3: Cross multiply
   5,543.56x = 7,639.59 × 3,968.92
4. Step 4: Simplify right side
   5,543.56x = 30,320,921.54
5. Step 5: Solve for x
   x = 30,320,921.54/5,543.56
6. Step 6: Final answer
   x = 5,469.58