Finding the Fourth Proportional to 11,179.67, 15,426.69 and 8,940.73

Step by Step Solution

1. Step 1: Write the proportion equation
   11,179.67 : 15,426.69 = 8,940.73 : x
2. Step 2: Convert to fraction form
   11,179.67/15,426.69 = 8,940.73/x
3. Step 3: Cross multiply
   11,179.67x = 15,426.69 × 8,940.73
4. Step 4: Simplify right side
   11,179.67x = 137,925,870.08
5. Step 5: Solve for x
   x = 137,925,870.08/11,179.67
6. Step 6: Final answer
   x = 12,337.20