Finding the Fourth Proportional to 18,603.69, 25,673.55 and 10,648.47

Step by Step Solution

1. Step 1: Write the proportion equation
   18,603.69 : 25,673.55 = 10,648.47 : x
2. Step 2: Convert to fraction form
   18,603.69/25,673.55 = 10,648.47/x
3. Step 3: Cross multiply
   18,603.69x = 25,673.55 × 10,648.47
4. Step 4: Simplify right side
   18,603.69x = 273,384,083.31
5. Step 5: Solve for x
   x = 273,384,083.31/18,603.69
6. Step 6: Final answer
   x = 14,695.16