Finding the Fourth Proportional to 9,636.12, 14,389.83 and 9,144.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,636.12 : 14,389.83 = 9,144.12 : x
2. Step 2: Convert to fraction form
   9,636.12/14,389.83 = 9,144.12/x
3. Step 3: Cross multiply
   9,636.12x = 14,389.83 × 9,144.12
4. Step 4: Simplify right side
   9,636.12x = 131,582,332.30
5. Step 5: Solve for x
   x = 131,582,332.30/9,636.12
6. Step 6: Final answer
   x = 13,655.12