Finding the Fourth Proportional to 11,629.98, 17,442.30 and 3,309.78

Step by Step Solution

1. Step 1: Write the proportion equation
   11,629.98 : 17,442.30 = 3,309.78 : x
2. Step 2: Convert to fraction form
   11,629.98/17,442.30 = 3,309.78/x
3. Step 3: Cross multiply
   11,629.98x = 17,442.30 × 3,309.78
4. Step 4: Simplify right side
   11,629.98x = 57,730,175.69
5. Step 5: Solve for x
   x = 57,730,175.69/11,629.98
6. Step 6: Final answer
   x = 4,963.91