Finding the Fourth Proportional to 12,022.96, 18,013.80 and 10,805.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,022.96 : 18,013.80 = 10,805.56 : x
2. Step 2: Convert to fraction form
   12,022.96/18,013.80 = 10,805.56/x
3. Step 3: Cross multiply
   12,022.96x = 18,013.80 × 10,805.56
4. Step 4: Simplify right side
   12,022.96x = 194,649,196.73
5. Step 5: Solve for x
   x = 194,649,196.73/12,022.96
6. Step 6: Final answer
   x = 16,189.79