Finding the Fourth Proportional to 12,216.50, 18,323.83 and 3,896.18

Step by Step Solution

1. Step 1: Write the proportion equation
   12,216.50 : 18,323.83 = 3,896.18 : x
2. Step 2: Convert to fraction form
   12,216.50/18,323.83 = 3,896.18/x
3. Step 3: Cross multiply
   12,216.50x = 18,323.83 × 3,896.18
4. Step 4: Simplify right side
   12,216.50x = 71,392,939.97
5. Step 5: Solve for x
   x = 71,392,939.97/12,216.50
6. Step 6: Final answer
   x = 5,843.98