Finding the Fourth Proportional to 6,788.55, 9,375.98 and 5,408.31

Step by Step Solution

1. Step 1: Write the proportion equation
   6,788.55 : 9,375.98 = 5,408.31 : x
2. Step 2: Convert to fraction form
   6,788.55/9,375.98 = 5,408.31/x
3. Step 3: Cross multiply
   6,788.55x = 9,375.98 × 5,408.31
4. Step 4: Simplify right side
   6,788.55x = 50,708,179.35
5. Step 5: Solve for x
   x = 50,708,179.35/6,788.55
6. Step 6: Final answer
   x = 7,469.66