Finding the Fourth Proportional to 11,117.49, 16,661.89 and 8,322.27

Step by Step Solution

1. Step 1: Write the proportion equation
   11,117.49 : 16,661.89 = 8,322.27 : x
2. Step 2: Convert to fraction form
   11,117.49/16,661.89 = 8,322.27/x
3. Step 3: Cross multiply
   11,117.49x = 16,661.89 × 8,322.27
4. Step 4: Simplify right side
   11,117.49x = 138,664,747.29
5. Step 5: Solve for x
   x = 138,664,747.29/11,117.49
6. Step 6: Final answer
   x = 12,472.67