Finding the Fourth Proportional to 8,212.19, 12,327.50 and 3,285.27

Step by Step Solution

1. Step 1: Write the proportion equation
   8,212.19 : 12,327.50 = 3,285.27 : x
2. Step 2: Convert to fraction form
   8,212.19/12,327.50 = 3,285.27/x
3. Step 3: Cross multiply
   8,212.19x = 12,327.50 × 3,285.27
4. Step 4: Simplify right side
   8,212.19x = 40,499,127.91
5. Step 5: Solve for x
   x = 40,499,127.91/8,212.19
6. Step 6: Final answer
   x = 4,931.59