Finding the Fourth Proportional to 11,836.17, 17,754.71 and 3,939.39

Step by Step Solution

1. Step 1: Write the proportion equation
   11,836.17 : 17,754.71 = 3,939.39 : x
2. Step 2: Convert to fraction form
   11,836.17/17,754.71 = 3,939.39/x
3. Step 3: Cross multiply
   11,836.17x = 17,754.71 × 3,939.39
4. Step 4: Simplify right side
   11,836.17x = 69,942,707.33
5. Step 5: Solve for x
   x = 69,942,707.33/11,836.17
6. Step 6: Final answer
   x = 5,909.23