Finding the Fourth Proportional to 7,209.00, 10,815.25 and 3,510.39

Step by Step Solution

1. Step 1: Write the proportion equation
   7,209.00 : 10,815.25 = 3,510.39 : x
2. Step 2: Convert to fraction form
   7,209.00/10,815.25 = 3,510.39/x
3. Step 3: Cross multiply
   7,209.00x = 10,815.25 × 3,510.39
4. Step 4: Simplify right side
   7,209.00x = 37,965,743.25
5. Step 5: Solve for x
   x = 37,965,743.25/7,209.00
6. Step 6: Final answer
   x = 5,266.44