Finding the Fourth Proportional to 5,591.88, 7,716.78 and 3,074.15

Step by Step Solution

1. Step 1: Write the proportion equation
   5,591.88 : 7,716.78 = 3,074.15 : x
2. Step 2: Convert to fraction form
   5,591.88/7,716.78 = 3,074.15/x
3. Step 3: Cross multiply
   5,591.88x = 7,716.78 × 3,074.15
4. Step 4: Simplify right side
   5,591.88x = 23,722,523.87
5. Step 5: Solve for x
   x = 23,722,523.87/5,591.88
6. Step 6: Final answer
   x = 4,242.31