Finding the Fourth Proportional to 10,222.72, 15,258.23 and 8,811.09

Step by Step Solution

1. Step 1: Write the proportion equation
   10,222.72 : 15,258.23 = 8,811.09 : x
2. Step 2: Convert to fraction form
   10,222.72/15,258.23 = 8,811.09/x
3. Step 3: Cross multiply
   10,222.72x = 15,258.23 × 8,811.09
4. Step 4: Simplify right side
   10,222.72x = 134,441,659.80
5. Step 5: Solve for x
   x = 134,441,659.80/10,222.72
6. Step 6: Final answer
   x = 13,151.26