Finding the Fourth Proportional to 18,399.32, 25,391.05 and 10,015.82

Step by Step Solution

1. Step 1: Write the proportion equation
   18,399.32 : 25,391.05 = 10,015.82 : x
2. Step 2: Convert to fraction form
   18,399.32/25,391.05 = 10,015.82/x
3. Step 3: Cross multiply
   18,399.32x = 25,391.05 × 10,015.82
4. Step 4: Simplify right side
   18,399.32x = 254,312,059.46
5. Step 5: Solve for x
   x = 254,312,059.46/18,399.32
6. Step 6: Final answer
   x = 13,821.82