Finding the Fourth Proportional to 11,356.57, 17,036.72 and 3,963.18

Step by Step Solution

1. Step 1: Write the proportion equation
   11,356.57 : 17,036.72 = 3,963.18 : x
2. Step 2: Convert to fraction form
   11,356.57/17,036.72 = 3,963.18/x
3. Step 3: Cross multiply
   11,356.57x = 17,036.72 × 3,963.18
4. Step 4: Simplify right side
   11,356.57x = 67,519,587.97
5. Step 5: Solve for x
   x = 67,519,587.97/11,356.57
6. Step 6: Final answer
   x = 5,945.42