Finding the Fourth Proportional to 7,105.47, 10,660.17 and 3,103.20

Step by Step Solution

1. Step 1: Write the proportion equation
   7,105.47 : 10,660.17 = 3,103.20 : x
2. Step 2: Convert to fraction form
   7,105.47/10,660.17 = 3,103.20/x
3. Step 3: Cross multiply
   7,105.47x = 10,660.17 × 3,103.20
4. Step 4: Simplify right side
   7,105.47x = 33,080,639.54
5. Step 5: Solve for x
   x = 33,080,639.54/7,105.47
6. Step 6: Final answer
   x = 4,655.66