Finding the Fourth Proportional to 18,404.79, 25,398.61 and 10,021.29

Step by Step Solution

1. Step 1: Write the proportion equation
   18,404.79 : 25,398.61 = 10,021.29 : x
2. Step 2: Convert to fraction form
   18,404.79/25,398.61 = 10,021.29/x
3. Step 3: Cross multiply
   18,404.79x = 25,398.61 × 10,021.29
4. Step 4: Simplify right side
   18,404.79x = 254,526,786.30
5. Step 5: Solve for x
   x = 254,526,786.30/18,404.79
6. Step 6: Final answer
   x = 13,829.38