Finding the Fourth Proportional to 18,148.42, 25,039.33 and 10,981

Step by Step Solution

1. Step 1: Write the proportion equation
   18,148.42 : 25,039.33 = 10,981 : x
2. Step 2: Convert to fraction form
   18,148.42/25,039.33 = 10,981/x
3. Step 3: Cross multiply
   18,148.42x = 25,039.33 × 10,981
4. Step 4: Simplify right side
   18,148.42x = 274,956,882.73
5. Step 5: Solve for x
   x = 274,956,882.73/18,148.42
6. Step 6: Final answer
   x = 15,150.46