Finding the Fourth Proportional to 11,859.47, 17,783.23 and 3,959.25

Step by Step Solution

1. Step 1: Write the proportion equation
   11,859.47 : 17,783.23 = 3,959.25 : x
2. Step 2: Convert to fraction form
   11,859.47/17,783.23 = 3,959.25/x
3. Step 3: Cross multiply
   11,859.47x = 17,783.23 × 3,959.25
4. Step 4: Simplify right side
   11,859.47x = 70,408,253.38
5. Step 5: Solve for x
   x = 70,408,253.38/11,859.47
6. Step 6: Final answer
   x = 5,936.88