Finding the Fourth Proportional to 16,235.69, 22,405.34 and 9,162.57

Step by Step Solution

1. Step 1: Write the proportion equation
   16,235.69 : 22,405.34 = 9,162.57 : x
2. Step 2: Convert to fraction form
   16,235.69/22,405.34 = 9,162.57/x
3. Step 3: Cross multiply
   16,235.69x = 22,405.34 × 9,162.57
4. Step 4: Simplify right side
   16,235.69x = 205,290,496.12
5. Step 5: Solve for x
   x = 205,290,496.12/16,235.69
6. Step 6: Final answer
   x = 12,644.40