Finding the Fourth Proportional to 18,402.29, 25,395.15 and 10,018.79

Step by Step Solution

1. Step 1: Write the proportion equation
   18,402.29 : 25,395.15 = 10,018.79 : x
2. Step 2: Convert to fraction form
   18,402.29/25,395.15 = 10,018.79/x
3. Step 3: Cross multiply
   18,402.29x = 25,395.15 × 10,018.79
4. Step 4: Simplify right side
   18,402.29x = 254,428,547.89
5. Step 5: Solve for x
   x = 254,428,547.89/18,402.29
6. Step 6: Final answer
   x = 13,825.92