Finding the Fourth Proportional to 5,783.83, 7,981.71 and 3,131.23

Step by Step Solution

1. Step 1: Write the proportion equation
   5,783.83 : 7,981.71 = 3,131.23 : x
2. Step 2: Convert to fraction form
   5,783.83/7,981.71 = 3,131.23/x
3. Step 3: Cross multiply
   5,783.83x = 7,981.71 × 3,131.23
4. Step 4: Simplify right side
   5,783.83x = 24,992,574.10
5. Step 5: Solve for x
   x = 24,992,574.10/5,783.83
6. Step 6: Final answer
   x = 4,321.11