Finding the Fourth Proportional to 8,710.68, 12,016.72 and 5,171.88

Step by Step Solution

1. Step 1: Write the proportion equation
   8,710.68 : 12,016.72 = 5,171.88 : x
2. Step 2: Convert to fraction form
   8,710.68/12,016.72 = 5,171.88/x
3. Step 3: Cross multiply
   8,710.68x = 12,016.72 × 5,171.88
4. Step 4: Simplify right side
   8,710.68x = 62,149,033.83
5. Step 5: Solve for x
   x = 62,149,033.83/8,710.68
6. Step 6: Final answer
   x = 7,134.81