Finding the Fourth Proportional to 8,395.79, 12,507.55 and 8,016.71

Step by Step Solution

1. Step 1: Write the proportion equation
   8,395.79 : 12,507.55 = 8,016.71 : x
2. Step 2: Convert to fraction form
   8,395.79/12,507.55 = 8,016.71/x
3. Step 3: Cross multiply
   8,395.79x = 12,507.55 × 8,016.71
4. Step 4: Simplify right side
   8,395.79x = 100,269,318.58
5. Step 5: Solve for x
   x = 100,269,318.58/8,395.79
6. Step 6: Final answer
   x = 11,942.82