Finding the Fourth Proportional to 18,061.38, 24,928.56 and 10,986.30

Step by Step Solution

1. Step 1: Write the proportion equation
   18,061.38 : 24,928.56 = 10,986.30 : x
2. Step 2: Convert to fraction form
   18,061.38/24,928.56 = 10,986.30/x
3. Step 3: Cross multiply
   18,061.38x = 24,928.56 × 10,986.30
4. Step 4: Simplify right side
   18,061.38x = 273,872,638.73
5. Step 5: Solve for x
   x = 273,872,638.73/18,061.38
6. Step 6: Final answer
   x = 15,163.44