Finding the Fourth Proportional to 8,648.46, 12,955.59 and 5,717.88

Step by Step Solution

1. Step 1: Write the proportion equation
   8,648.46 : 12,955.59 = 5,717.88 : x
2. Step 2: Convert to fraction form
   8,648.46/12,955.59 = 5,717.88/x
3. Step 3: Cross multiply
   8,648.46x = 12,955.59 × 5,717.88
4. Step 4: Simplify right side
   8,648.46x = 74,078,508.95
5. Step 5: Solve for x
   x = 74,078,508.95/8,648.46
6. Step 6: Final answer
   x = 8,565.51