Finding the Fourth Proportional to 8,155.98, 12,162.51 and 8,082.09

Step by Step Solution

1. Step 1: Write the proportion equation
   8,155.98 : 12,162.51 = 8,082.09 : x
2. Step 2: Convert to fraction form
   8,155.98/12,162.51 = 8,082.09/x
3. Step 3: Cross multiply
   8,155.98x = 12,162.51 × 8,082.09
4. Step 4: Simplify right side
   8,155.98x = 98,298,500.45
5. Step 5: Solve for x
   x = 98,298,500.45/8,155.98
6. Step 6: Final answer
   x = 12,052.32