Finding the Fourth Proportional to 16,128.45, 24,198.80 and 9,116.37

Step by Step Solution

1. Step 1: Write the proportion equation
   16,128.45 : 24,198.80 = 9,116.37 : x
2. Step 2: Convert to fraction form
   16,128.45/24,198.80 = 9,116.37/x
3. Step 3: Cross multiply
   16,128.45x = 24,198.80 × 9,116.37
4. Step 4: Simplify right side
   16,128.45x = 220,605,168.77
5. Step 5: Solve for x
   x = 220,605,168.77/16,128.45
6. Step 6: Final answer
   x = 13,678.01