Finding the Fourth Proportional to 9,965.50, 13,752.39 and 5,776.18

Step by Step Solution

1. Step 1: Write the proportion equation
   9,965.50 : 13,752.39 = 5,776.18 : x
2. Step 2: Convert to fraction form
   9,965.50/13,752.39 = 5,776.18/x
3. Step 3: Cross multiply
   9,965.50x = 13,752.39 × 5,776.18
4. Step 4: Simplify right side
   9,965.50x = 79,436,280.07
5. Step 5: Solve for x
   x = 79,436,280.07/9,965.50
6. Step 6: Final answer
   x = 7,971.13