Finding the Fourth Proportional to 16,578.72, 22,863.60 and 10,980

Step by Step Solution

1. Step 1: Write the proportion equation
   16,578.72 : 22,863.60 = 10,980 : x
2. Step 2: Convert to fraction form
   16,578.72/22,863.60 = 10,980/x
3. Step 3: Cross multiply
   16,578.72x = 22,863.60 × 10,980
4. Step 4: Simplify right side
   16,578.72x = 251,042,328.00
5. Step 5: Solve for x
   x = 251,042,328.00/16,578.72
6. Step 6: Final answer
   x = 15,142.44