Finding the Fourth Proportional to 11,862.56, 17,796.38 and 3,965.76

Step by Step Solution

1. Step 1: Write the proportion equation
   11,862.56 : 17,796.38 = 3,965.76 : x
2. Step 2: Convert to fraction form
   11,862.56/17,796.38 = 3,965.76/x
3. Step 3: Cross multiply
   11,862.56x = 17,796.38 × 3,965.76
4. Step 4: Simplify right side
   11,862.56x = 70,576,171.95
5. Step 5: Solve for x
   x = 70,576,171.95/11,862.56
6. Step 6: Final answer
   x = 5,949.49