Finding the Fourth Proportional to 16,651.98, 22,980.81 and 9,578.25

Step by Step Solution

1. Step 1: Write the proportion equation
   16,651.98 : 22,980.81 = 9,578.25 : x
2. Step 2: Convert to fraction form
   16,651.98/22,980.81 = 9,578.25/x
3. Step 3: Cross multiply
   16,651.98x = 22,980.81 × 9,578.25
4. Step 4: Simplify right side
   16,651.98x = 220,115,943.38
5. Step 5: Solve for x
   x = 220,115,943.38/16,651.98
6. Step 6: Final answer
   x = 13,218.60