Finding the Fourth Proportional to 18,344.16, 25,314.72 and 9,960.72

Step by Step Solution

1. Step 1: Write the proportion equation
   18,344.16 : 25,314.72 = 9,960.72 : x
2. Step 2: Convert to fraction form
   18,344.16/25,314.72 = 9,960.72/x
3. Step 3: Cross multiply
   18,344.16x = 25,314.72 × 9,960.72
4. Step 4: Simplify right side
   18,344.16x = 252,152,837.80
5. Step 5: Solve for x
   x = 252,152,837.80/18,344.16
6. Step 6: Final answer
   x = 13,745.67