Finding the Fourth Proportional to 9,016.27, 12,439.71 and 5,238.70

Step by Step Solution

1. Step 1: Write the proportion equation
   9,016.27 : 12,439.71 = 5,238.70 : x
2. Step 2: Convert to fraction form
   9,016.27/12,439.71 = 5,238.70/x
3. Step 3: Cross multiply
   9,016.27x = 12,439.71 × 5,238.70
4. Step 4: Simplify right side
   9,016.27x = 65,167,877.68
5. Step 5: Solve for x
   x = 65,167,877.68/9,016.27
6. Step 6: Final answer
   x = 7,227.81