Finding the Fourth Proportional to 8,311.67, 12,456.66 and 3,375.53

Step by Step Solution

1. Step 1: Write the proportion equation
   8,311.67 : 12,456.66 = 3,375.53 : x
2. Step 2: Convert to fraction form
   8,311.67/12,456.66 = 3,375.53/x
3. Step 3: Cross multiply
   8,311.67x = 12,456.66 × 3,375.53
4. Step 4: Simplify right side
   8,311.67x = 42,047,829.53
5. Step 5: Solve for x
   x = 42,047,829.53/8,311.67
6. Step 6: Final answer
   x = 5,058.89