Finding the Fourth Proportional to 5,747.25, 7,928.33 and 3,859.30

Step by Step Solution

1. Step 1: Write the proportion equation
   5,747.25 : 7,928.33 = 3,859.30 : x
2. Step 2: Convert to fraction form
   5,747.25/7,928.33 = 3,859.30/x
3. Step 3: Cross multiply
   5,747.25x = 7,928.33 × 3,859.30
4. Step 4: Simplify right side
   5,747.25x = 30,597,771.69
5. Step 5: Solve for x
   x = 30,597,771.69/5,747.25
6. Step 6: Final answer
   x = 5,323.89