Finding the Fourth Proportional to 10,238.50, 14,118.69 and 9,643.30

Step by Step Solution

1. Step 1: Write the proportion equation
   10,238.50 : 14,118.69 = 9,643.30 : x
2. Step 2: Convert to fraction form
   10,238.50/14,118.69 = 9,643.30/x
3. Step 3: Cross multiply
   10,238.50x = 14,118.69 × 9,643.30
4. Step 4: Simplify right side
   10,238.50x = 136,150,763.28
5. Step 5: Solve for x
   x = 136,150,763.28/10,238.50
6. Step 6: Final answer
   x = 13,297.92