Finding the Fourth Proportional to 18,585.57, 25,648.10 and 10,087.69

Step by Step Solution

1. Step 1: Write the proportion equation
   18,585.57 : 25,648.10 = 10,087.69 : x
2. Step 2: Convert to fraction form
   18,585.57/25,648.10 = 10,087.69/x
3. Step 3: Cross multiply
   18,585.57x = 25,648.10 × 10,087.69
4. Step 4: Simplify right side
   18,585.57x = 258,730,081.89
5. Step 5: Solve for x
   x = 258,730,081.89/18,585.57
6. Step 6: Final answer
   x = 13,921.02