Finding the Fourth Proportional to 8,311.82, 12,466.51 and 3,381.55

Step by Step Solution

1. Step 1: Write the proportion equation
   8,311.82 : 12,466.51 = 3,381.55 : x
2. Step 2: Convert to fraction form
   8,311.82/12,466.51 = 3,381.55/x
3. Step 3: Cross multiply
   8,311.82x = 12,466.51 × 3,381.55
4. Step 4: Simplify right side
   8,311.82x = 42,156,087.27
5. Step 5: Solve for x
   x = 42,156,087.27/8,311.82
6. Step 6: Final answer
   x = 5,071.83