Finding the Fourth Proportional to 11,901, 16,400.73 and 8,715.27

Step by Step Solution

1. Step 1: Write the proportion equation
   11,901 : 16,400.73 = 8,715.27 : x
2. Step 2: Convert to fraction form
   11,901/16,400.73 = 8,715.27/x
3. Step 3: Cross multiply
   11,901x = 16,400.73 × 8,715.27
4. Step 4: Simplify right side
   11,901x = 142,936,790.15
5. Step 5: Solve for x
   x = 142,936,790.15/11,901
6. Step 6: Final answer
   x = 12,010.49