Finding the Fourth Proportional to 18,404.31, 25,397.99 and 10,020.81

Step by Step Solution

1. Step 1: Write the proportion equation
   18,404.31 : 25,397.99 = 10,020.81 : x
2. Step 2: Convert to fraction form
   18,404.31/25,397.99 = 10,020.81/x
3. Step 3: Cross multiply
   18,404.31x = 25,397.99 × 10,020.81
4. Step 4: Simplify right side
   18,404.31x = 254,508,432.17
5. Step 5: Solve for x
   x = 254,508,432.17/18,404.31
6. Step 6: Final answer
   x = 13,828.74