Finding the Fourth Proportional to 3,953.31, 5,912.49 and 3,517.62

Step by Step Solution

1. Step 1: Write the proportion equation
   3,953.31 : 5,912.49 = 3,517.62 : x
2. Step 2: Convert to fraction form
   3,953.31/5,912.49 = 3,517.62/x
3. Step 3: Cross multiply
   3,953.31x = 5,912.49 × 3,517.62
4. Step 4: Simplify right side
   3,953.31x = 20,797,893.07
5. Step 5: Solve for x
   x = 20,797,893.07/3,953.31
6. Step 6: Final answer
   x = 5,260.88