Finding the Fourth Proportional to 12,111.76, 16,726.92 and 8,344.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,111.76 : 16,726.92 = 8,344.72 : x
2. Step 2: Convert to fraction form
   12,111.76/16,726.92 = 8,344.72/x
3. Step 3: Cross multiply
   12,111.76x = 16,726.92 × 8,344.72
4. Step 4: Simplify right side
   12,111.76x = 139,581,463.86
5. Step 5: Solve for x
   x = 139,581,463.86/12,111.76
6. Step 6: Final answer
   x = 11,524.46