Finding the Fourth Proportional to 16,651.76, 22,977.72 and 9,576.80

Step by Step Solution

1. Step 1: Write the proportion equation
   16,651.76 : 22,977.72 = 9,576.80 : x
2. Step 2: Convert to fraction form
   16,651.76/22,977.72 = 9,576.80/x
3. Step 3: Cross multiply
   16,651.76x = 22,977.72 × 9,576.80
4. Step 4: Simplify right side
   16,651.76x = 220,053,028.90
5. Step 5: Solve for x
   x = 220,053,028.90/16,651.76
6. Step 6: Final answer
   x = 13,215.00