Finding the Fourth Proportional to 10,518.89, 14,502.06 and 8,719.61

Step by Step Solution

1. Step 1: Write the proportion equation
   10,518.89 : 14,502.06 = 8,719.61 : x
2. Step 2: Convert to fraction form
   10,518.89/14,502.06 = 8,719.61/x
3. Step 3: Cross multiply
   10,518.89x = 14,502.06 × 8,719.61
4. Step 4: Simplify right side
   10,518.89x = 126,452,234.89
5. Step 5: Solve for x
   x = 126,452,234.89/10,518.89
6. Step 6: Final answer
   x = 12,021.45