Finding the Fourth Proportional to 8,141.72, 12,204.27 and 3,208.61

Step by Step Solution

1. Step 1: Write the proportion equation
   8,141.72 : 12,204.27 = 3,208.61 : x
2. Step 2: Convert to fraction form
   8,141.72/12,204.27 = 3,208.61/x
3. Step 3: Cross multiply
   8,141.72x = 12,204.27 × 3,208.61
4. Step 4: Simplify right side
   8,141.72x = 39,158,773.28
5. Step 5: Solve for x
   x = 39,158,773.28/8,141.72
6. Step 6: Final answer
   x = 4,809.65