Finding the Fourth Proportional to 6,104.82, 8,428.92 and 5,391.20

Step by Step Solution

1. Step 1: Write the proportion equation
   6,104.82 : 8,428.92 = 5,391.20 : x
2. Step 2: Convert to fraction form
   6,104.82/8,428.92 = 5,391.20/x
3. Step 3: Cross multiply
   6,104.82x = 8,428.92 × 5,391.20
4. Step 4: Simplify right side
   6,104.82x = 45,441,993.50
5. Step 5: Solve for x
   x = 45,441,993.50/6,104.82
6. Step 6: Final answer
   x = 7,443.63