Finding the Fourth Proportional to 3,942.99, 5,897.05 and 3,507.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,942.99 : 5,897.05 = 3,507.30 : x
2. Step 2: Convert to fraction form
   3,942.99/5,897.05 = 3,507.30/x
3. Step 3: Cross multiply
   3,942.99x = 5,897.05 × 3,507.30
4. Step 4: Simplify right side
   3,942.99x = 20,682,723.47
5. Step 5: Solve for x
   x = 20,682,723.47/3,942.99
6. Step 6: Final answer
   x = 5,245.44