Finding the Fourth Proportional to 11,760.39, 17,643.02 and 3,969

Step by Step Solution

1. Step 1: Write the proportion equation
   11,760.39 : 17,643.02 = 3,969 : x
2. Step 2: Convert to fraction form
   11,760.39/17,643.02 = 3,969/x
3. Step 3: Cross multiply
   11,760.39x = 17,643.02 × 3,969
4. Step 4: Simplify right side
   11,760.39x = 70,025,126.54
5. Step 5: Solve for x
   x = 70,025,126.54/11,760.39
6. Step 6: Final answer
   x = 5,954.32