Finding the Fourth Proportional to 9,222.62, 13,823.48 and 8,109.89

Step by Step Solution

1. Step 1: Write the proportion equation
   9,222.62 : 13,823.48 = 8,109.89 : x
2. Step 2: Convert to fraction form
   9,222.62/13,823.48 = 8,109.89/x
3. Step 3: Cross multiply
   9,222.62x = 13,823.48 × 8,109.89
4. Step 4: Simplify right side
   9,222.62x = 112,106,792.55
5. Step 5: Solve for x
   x = 112,106,792.55/9,222.62
6. Step 6: Final answer
   x = 12,155.64