Finding the Fourth Proportional to 11,978.43, 17,959.83 and 5,738.25

Step by Step Solution

1. Step 1: Write the proportion equation
   11,978.43 : 17,959.83 = 5,738.25 : x
2. Step 2: Convert to fraction form
   11,978.43/17,959.83 = 5,738.25/x
3. Step 3: Cross multiply
   11,978.43x = 17,959.83 × 5,738.25
4. Step 4: Simplify right side
   11,978.43x = 103,057,994.50
5. Step 5: Solve for x
   x = 103,057,994.50/11,978.43
6. Step 6: Final answer
   x = 8,603.63