Finding the Fourth Proportional to 11,359.34, 17,039.08 and 3,963.78

Step by Step Solution

1. Step 1: Write the proportion equation
   11,359.34 : 17,039.08 = 3,963.78 : x
2. Step 2: Convert to fraction form
   11,359.34/17,039.08 = 3,963.78/x
3. Step 3: Cross multiply
   11,359.34x = 17,039.08 × 3,963.78
4. Step 4: Simplify right side
   11,359.34x = 67,539,164.52
5. Step 5: Solve for x
   x = 67,539,164.52/11,359.34
6. Step 6: Final answer
   x = 5,945.69