Finding the Fourth Proportional to 5,328.56, 7,993.08 and 3,860.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,328.56 : 7,993.08 = 3,860.72 : x
2. Step 2: Convert to fraction form
   5,328.56/7,993.08 = 3,860.72/x
3. Step 3: Cross multiply
   5,328.56x = 7,993.08 × 3,860.72
4. Step 4: Simplify right side
   5,328.56x = 30,859,043.82
5. Step 5: Solve for x
   x = 30,859,043.82/5,328.56
6. Step 6: Final answer
   x = 5,791.25