Finding the Fourth Proportional to 11,339.73, 16,981.31 and 7,167.15

Step by Step Solution

1. Step 1: Write the proportion equation
   11,339.73 : 16,981.31 = 7,167.15 : x
2. Step 2: Convert to fraction form
   11,339.73/16,981.31 = 7,167.15/x
3. Step 3: Cross multiply
   11,339.73x = 16,981.31 × 7,167.15
4. Step 4: Simplify right side
   11,339.73x = 121,707,613.88
5. Step 5: Solve for x
   x = 121,707,613.88/11,339.73
6. Step 6: Final answer
   x = 10,732.85