Finding the Fourth Proportional to 6,449.85, 8,880.94 and 5,648.56

Step by Step Solution

1. Step 1: Write the proportion equation
   6,449.85 : 8,880.94 = 5,648.56 : x
2. Step 2: Convert to fraction form
   6,449.85/8,880.94 = 5,648.56/x
3. Step 3: Cross multiply
   6,449.85x = 8,880.94 × 5,648.56
4. Step 4: Simplify right side
   6,449.85x = 50,164,508.33
5. Step 5: Solve for x
   x = 50,164,508.33/6,449.85
6. Step 6: Final answer
   x = 7,777.62