Finding the Fourth Proportional to 5,783.82, 7,981.72 and 3,131.27

Step by Step Solution

1. Step 1: Write the proportion equation
   5,783.82 : 7,981.72 = 3,131.27 : x
2. Step 2: Convert to fraction form
   5,783.82/7,981.72 = 3,131.27/x
3. Step 3: Cross multiply
   5,783.82x = 7,981.72 × 3,131.27
4. Step 4: Simplify right side
   5,783.82x = 24,992,924.68
5. Step 5: Solve for x
   x = 24,992,924.68/5,783.82
6. Step 6: Final answer
   x = 4,321.18