Finding the Fourth Proportional to 9,965.40, 14,951.89 and 3,728.19

Step by Step Solution

1. Step 1: Write the proportion equation
   9,965.40 : 14,951.89 = 3,728.19 : x
2. Step 2: Convert to fraction form
   9,965.40/14,951.89 = 3,728.19/x
3. Step 3: Cross multiply
   9,965.40x = 14,951.89 × 3,728.19
4. Step 4: Simplify right side
   9,965.40x = 55,743,547.51
5. Step 5: Solve for x
   x = 55,743,547.51/9,965.40
6. Step 6: Final answer
   x = 5,593.71