Finding the Fourth Proportional to 3,916.99, 5,842.82 and 3,543.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,916.99 : 5,842.82 = 3,543.31 : x
2. Step 2: Convert to fraction form
   3,916.99/5,842.82 = 3,543.31/x
3. Step 3: Cross multiply
   3,916.99x = 5,842.82 × 3,543.31
4. Step 4: Simplify right side
   3,916.99x = 20,702,922.53
5. Step 5: Solve for x
   x = 20,702,922.53/3,916.99
6. Step 6: Final answer
   x = 5,285.42