Finding the Fourth Proportional to 9,969.75, 13,763.24 and 7,726.59

Step by Step Solution

1. Step 1: Write the proportion equation
   9,969.75 : 13,763.24 = 7,726.59 : x
2. Step 2: Convert to fraction form
   9,969.75/13,763.24 = 7,726.59/x
3. Step 3: Cross multiply
   9,969.75x = 13,763.24 × 7,726.59
4. Step 4: Simplify right side
   9,969.75x = 106,342,912.55
5. Step 5: Solve for x
   x = 106,342,912.55/9,969.75
6. Step 6: Final answer
   x = 10,666.56