Finding the Fourth Proportional to 8,143.50, 11,238.30 and 4,786.26

Step by Step Solution

1. Step 1: Write the proportion equation
   8,143.50 : 11,238.30 = 4,786.26 : x
2. Step 2: Convert to fraction form
   8,143.50/11,238.30 = 4,786.26/x
3. Step 3: Cross multiply
   8,143.50x = 11,238.30 × 4,786.26
4. Step 4: Simplify right side
   8,143.50x = 53,789,401.83
5. Step 5: Solve for x
   x = 53,789,401.83/8,143.50
6. Step 6: Final answer
   x = 6,605.20