Finding the Fourth Proportional to 10,416.72, 14,366.94 and 9,222.98

Step by Step Solution

1. Step 1: Write the proportion equation
   10,416.72 : 14,366.94 = 9,222.98 : x
2. Step 2: Convert to fraction form
   10,416.72/14,366.94 = 9,222.98/x
3. Step 3: Cross multiply
   10,416.72x = 14,366.94 × 9,222.98
4. Step 4: Simplify right side
   10,416.72x = 132,505,928.45
5. Step 5: Solve for x
   x = 132,505,928.45/10,416.72
6. Step 6: Final answer
   x = 12,720.50