Finding the Fourth Proportional to 3,912.83, 5,870.45 and 3,499.32

Step by Step Solution

1. Step 1: Write the proportion equation
   3,912.83 : 5,870.45 = 3,499.32 : x
2. Step 2: Convert to fraction form
   3,912.83/5,870.45 = 3,499.32/x
3. Step 3: Cross multiply
   3,912.83x = 5,870.45 × 3,499.32
4. Step 4: Simplify right side
   3,912.83x = 20,542,591.84
5. Step 5: Solve for x
   x = 20,542,591.84/3,912.83
6. Step 6: Final answer
   x = 5,250.07