Finding the Fourth Proportional to 17,919.49, 24,728.61 and 9,960.70

Step by Step Solution

1. Step 1: Write the proportion equation
   17,919.49 : 24,728.61 = 9,960.70 : x
2. Step 2: Convert to fraction form
   17,919.49/24,728.61 = 9,960.70/x
3. Step 3: Cross multiply
   17,919.49x = 24,728.61 × 9,960.70
4. Step 4: Simplify right side
   17,919.49x = 246,314,265.63
5. Step 5: Solve for x
   x = 246,314,265.63/17,919.49
6. Step 6: Final answer
   x = 13,745.61