Finding the Fourth Proportional to 18,598.52, 25,665.94 and 10,215

Step by Step Solution

1. Step 1: Write the proportion equation
   18,598.52 : 25,665.94 = 10,215 : x
2. Step 2: Convert to fraction form
   18,598.52/25,665.94 = 10,215/x
3. Step 3: Cross multiply
   18,598.52x = 25,665.94 × 10,215
4. Step 4: Simplify right side
   18,598.52x = 262,177,577.10
5. Step 5: Solve for x
   x = 262,177,577.10/18,598.52
6. Step 6: Final answer
   x = 14,096.69