Finding the Fourth Proportional to 9,727.88, 13,416.18 and 8,222.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,727.88 : 13,416.18 = 8,222.72 : x
2. Step 2: Convert to fraction form
   9,727.88/13,416.18 = 8,222.72/x
3. Step 3: Cross multiply
   9,727.88x = 13,416.18 × 8,222.72
4. Step 4: Simplify right side
   9,727.88x = 110,317,491.61
5. Step 5: Solve for x
   x = 110,317,491.61/9,727.88
6. Step 6: Final answer
   x = 11,340.34