Finding the Fourth Proportional to 18,139.53, 25,034.27 and 10,585.25

Step by Step Solution

1. Step 1: Write the proportion equation
   18,139.53 : 25,034.27 = 10,585.25 : x
2. Step 2: Convert to fraction form
   18,139.53/25,034.27 = 10,585.25/x
3. Step 3: Cross multiply
   18,139.53x = 25,034.27 × 10,585.25
4. Step 4: Simplify right side
   18,139.53x = 264,993,953.59
5. Step 5: Solve for x
   x = 264,993,953.59/18,139.53
6. Step 6: Final answer
   x = 14,608.64