Finding the Fourth Proportional to 5,672.06, 7,829.04 and 3,993.86

Step by Step Solution

1. Step 1: Write the proportion equation
   5,672.06 : 7,829.04 = 3,993.86 : x
2. Step 2: Convert to fraction form
   5,672.06/7,829.04 = 3,993.86/x
3. Step 3: Cross multiply
   5,672.06x = 7,829.04 × 3,993.86
4. Step 4: Simplify right side
   5,672.06x = 31,268,089.69
5. Step 5: Solve for x
   x = 31,268,089.69/5,672.06
6. Step 6: Final answer
   x = 5,512.65