Finding the Fourth Proportional to 8,481.72, 12,705.22 and 3,972.31

Step by Step Solution

1. Step 1: Write the proportion equation
   8,481.72 : 12,705.22 = 3,972.31 : x
2. Step 2: Convert to fraction form
   8,481.72/12,705.22 = 3,972.31/x
3. Step 3: Cross multiply
   8,481.72x = 12,705.22 × 3,972.31
4. Step 4: Simplify right side
   8,481.72x = 50,469,072.46
5. Step 5: Solve for x
   x = 50,469,072.46/8,481.72
6. Step 6: Final answer
   x = 5,950.33