Finding the Fourth Proportional to 11,910.27, 17,867.68 and 5,673.21

Step by Step Solution

1. Step 1: Write the proportion equation
   11,910.27 : 17,867.68 = 5,673.21 : x
2. Step 2: Convert to fraction form
   11,910.27/17,867.68 = 5,673.21/x
3. Step 3: Cross multiply
   11,910.27x = 17,867.68 × 5,673.21
4. Step 4: Simplify right side
   11,910.27x = 101,367,162.45
5. Step 5: Solve for x
   x = 101,367,162.45/11,910.27
6. Step 6: Final answer
   x = 8,510.91