Finding the Fourth Proportional to 3,759.76, 5,641.59 and 2,728.27

Step by Step Solution

1. Step 1: Write the proportion equation
   3,759.76 : 5,641.59 = 2,728.27 : x
2. Step 2: Convert to fraction form
   3,759.76/5,641.59 = 2,728.27/x
3. Step 3: Cross multiply
   3,759.76x = 5,641.59 × 2,728.27
4. Step 4: Simplify right side
   3,759.76x = 15,391,782.69
5. Step 5: Solve for x
   x = 15,391,782.69/3,759.76
6. Step 6: Final answer
   x = 4,093.82