Finding the Fourth Proportional to 8,291.82, 12,439.59 and 4,398.96

Step by Step Solution

1. Step 1: Write the proportion equation
   8,291.82 : 12,439.59 = 4,398.96 : x
2. Step 2: Convert to fraction form
   8,291.82/12,439.59 = 4,398.96/x
3. Step 3: Cross multiply
   8,291.82x = 12,439.59 × 4,398.96
4. Step 4: Simplify right side
   8,291.82x = 54,721,258.83
5. Step 5: Solve for x
   x = 54,721,258.83/8,291.82
6. Step 6: Final answer
   x = 6,599.43