Finding the Fourth Proportional to 18,603.32, 25,672.85 and 10,105.61

Step by Step Solution

1. Step 1: Write the proportion equation
   18,603.32 : 25,672.85 = 10,105.61 : x
2. Step 2: Convert to fraction form
   18,603.32/25,672.85 = 10,105.61/x
3. Step 3: Cross multiply
   18,603.32x = 25,672.85 × 10,105.61
4. Step 4: Simplify right side
   18,603.32x = 259,439,706.59
5. Step 5: Solve for x
   x = 259,439,706.59/18,603.32
6. Step 6: Final answer
   x = 13,945.88