Finding the Fourth Proportional to 8,141.66, 12,139.33 and 7,446.60

Step by Step Solution

1. Step 1: Write the proportion equation
   8,141.66 : 12,139.33 = 7,446.60 : x
2. Step 2: Convert to fraction form
   8,141.66/12,139.33 = 7,446.60/x
3. Step 3: Cross multiply
   8,141.66x = 12,139.33 × 7,446.60
4. Step 4: Simplify right side
   8,141.66x = 90,396,734.78
5. Step 5: Solve for x
   x = 90,396,734.78/8,141.66
6. Step 6: Final answer
   x = 11,102.99