Finding the Fourth Proportional to 9,443.64, 14,221.69 and 8,225.76

Step by Step Solution

1. Step 1: Write the proportion equation
   9,443.64 : 14,221.69 = 8,225.76 : x
2. Step 2: Convert to fraction form
   9,443.64/14,221.69 = 8,225.76/x
3. Step 3: Cross multiply
   9,443.64x = 14,221.69 × 8,225.76
4. Step 4: Simplify right side
   9,443.64x = 116,984,241.50
5. Step 5: Solve for x
   x = 116,984,241.50/9,443.64
6. Step 6: Final answer
   x = 12,387.62