Finding the Fourth Proportional to 9,443.18, 14,220.98 and 8,225.30

Step by Step Solution

1. Step 1: Write the proportion equation
   9,443.18 : 14,220.98 = 8,225.30 : x
2. Step 2: Convert to fraction form
   9,443.18/14,220.98 = 8,225.30/x
3. Step 3: Cross multiply
   9,443.18x = 14,220.98 × 8,225.30
4. Step 4: Simplify right side
   9,443.18x = 116,971,826.79
5. Step 5: Solve for x
   x = 116,971,826.79/9,443.18
6. Step 6: Final answer
   x = 12,386.91