Finding the Fourth Proportional to 5,683.71, 7,843.73 and 3,131.57

Step by Step Solution

1. Step 1: Write the proportion equation
   5,683.71 : 7,843.73 = 3,131.57 : x
2. Step 2: Convert to fraction form
   5,683.71/7,843.73 = 3,131.57/x
3. Step 3: Cross multiply
   5,683.71x = 7,843.73 × 3,131.57
4. Step 4: Simplify right side
   5,683.71x = 24,563,189.56
5. Step 5: Solve for x
   x = 24,563,189.56/5,683.71
6. Step 6: Final answer
   x = 4,321.68