Finding the Fourth Proportional to 3,409.20, 5,107.05 and 3,003.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,409.20 : 5,107.05 = 3,003.30 : x
2. Step 2: Convert to fraction form
   3,409.20/5,107.05 = 3,003.30/x
3. Step 3: Cross multiply
   3,409.20x = 5,107.05 × 3,003.30
4. Step 4: Simplify right side
   3,409.20x = 15,338,003.27
5. Step 5: Solve for x
   x = 15,338,003.27/3,409.20
6. Step 6: Final answer
   x = 4,499.00