Finding the Fourth Proportional to 9,667.20, 14,400.96 and 9,436.80

Step by Step Solution

1. Step 1: Write the proportion equation
   9,667.20 : 14,400.96 = 9,436.80 : x
2. Step 2: Convert to fraction form
   9,667.20/14,400.96 = 9,436.80/x
3. Step 3: Cross multiply
   9,667.20x = 14,400.96 × 9,436.80
4. Step 4: Simplify right side
   9,667.20x = 135,898,979.33
5. Step 5: Solve for x
   x = 135,898,979.33/9,667.20
6. Step 6: Final answer
   x = 14,057.74