Finding the Fourth Proportional to 5,728.06, 7,845.49 and 5,391.82

Step by Step Solution

1. Step 1: Write the proportion equation
   5,728.06 : 7,845.49 = 5,391.82 : x
2. Step 2: Convert to fraction form
   5,728.06/7,845.49 = 5,391.82/x
3. Step 3: Cross multiply
   5,728.06x = 7,845.49 × 5,391.82
4. Step 4: Simplify right side
   5,728.06x = 42,301,469.89
5. Step 5: Solve for x
   x = 42,301,469.89/5,728.06
6. Step 6: Final answer
   x = 7,384.96