Finding the Fourth Proportional to 16,238.41, 22,405.31 and 9,162.25

Step by Step Solution

1. Step 1: Write the proportion equation
   16,238.41 : 22,405.31 = 9,162.25 : x
2. Step 2: Convert to fraction form
   16,238.41/22,405.31 = 9,162.25/x
3. Step 3: Cross multiply
   16,238.41x = 22,405.31 × 9,162.25
4. Step 4: Simplify right side
   16,238.41x = 205,282,984.08
5. Step 5: Solve for x
   x = 205,282,984.08/16,238.41
6. Step 6: Final answer
   x = 12,641.82