Finding the Fourth Proportional to 9,969.20, 13,759.48 and 5,723.13

Step by Step Solution

1. Step 1: Write the proportion equation
   9,969.20 : 13,759.48 = 5,723.13 : x
2. Step 2: Convert to fraction form
   9,969.20/13,759.48 = 5,723.13/x
3. Step 3: Cross multiply
   9,969.20x = 13,759.48 × 5,723.13
4. Step 4: Simplify right side
   9,969.20x = 78,747,292.77
5. Step 5: Solve for x
   x = 78,747,292.77/9,969.20
6. Step 6: Final answer
   x = 7,899.06