Finding the Fourth Proportional to 10,695.94, 16,065.78 and 8,222.20

Step by Step Solution

1. Step 1: Write the proportion equation
   10,695.94 : 16,065.78 = 8,222.20 : x
2. Step 2: Convert to fraction form
   10,695.94/16,065.78 = 8,222.20/x
3. Step 3: Cross multiply
   10,695.94x = 16,065.78 × 8,222.20
4. Step 4: Simplify right side
   10,695.94x = 132,096,056.32
5. Step 5: Solve for x
   x = 132,096,056.32/10,695.94
6. Step 6: Final answer
   x = 12,350.11