Finding the Fourth Proportional to 8,082.30, 12,118.89 and 3,146.30

Step by Step Solution

1. Step 1: Write the proportion equation
   8,082.30 : 12,118.89 = 3,146.30 : x
2. Step 2: Convert to fraction form
   8,082.30/12,118.89 = 3,146.30/x
3. Step 3: Cross multiply
   8,082.30x = 12,118.89 × 3,146.30
4. Step 4: Simplify right side
   8,082.30x = 38,129,603.01
5. Step 5: Solve for x
   x = 38,129,603.01/8,082.30
6. Step 6: Final answer
   x = 4,717.67