Finding the Fourth Proportional to 8,238.72, 12,317.92 and 7,020.48

Step by Step Solution

1. Step 1: Write the proportion equation
   8,238.72 : 12,317.92 = 7,020.48 : x
2. Step 2: Convert to fraction form
   8,238.72/12,317.92 = 7,020.48/x
3. Step 3: Cross multiply
   8,238.72x = 12,317.92 × 7,020.48
4. Step 4: Simplify right side
   8,238.72x = 86,477,711.00
5. Step 5: Solve for x
   x = 86,477,711.00/8,238.72
6. Step 6: Final answer
   x = 10,496.50