Finding the Fourth Proportional to 3,983.83, 5,976.99 and 3,109.32

Step by Step Solution

1. Step 1: Write the proportion equation
   3,983.83 : 5,976.99 = 3,109.32 : x
2. Step 2: Convert to fraction form
   3,983.83/5,976.99 = 3,109.32/x
3. Step 3: Cross multiply
   3,983.83x = 5,976.99 × 3,109.32
4. Step 4: Simplify right side
   3,983.83x = 18,584,344.66
5. Step 5: Solve for x
   x = 18,584,344.66/3,983.83
6. Step 6: Final answer
   x = 4,664.94