Finding the Fourth Proportional to 11,919.73, 16,422.69 and 8,727.61

Step by Step Solution

1. Step 1: Write the proportion equation
   11,919.73 : 16,422.69 = 8,727.61 : x
2. Step 2: Convert to fraction form
   11,919.73/16,422.69 = 8,727.61/x
3. Step 3: Cross multiply
   11,919.73x = 16,422.69 × 8,727.61
4. Step 4: Simplify right side
   11,919.73x = 143,330,833.47
5. Step 5: Solve for x
   x = 143,330,833.47/11,919.73
6. Step 6: Final answer
   x = 12,024.67