Finding the Fourth Proportional to 7,150.24, 10,720.38 and 3,145.69

Step by Step Solution

1. Step 1: Write the proportion equation
   7,150.24 : 10,720.38 = 3,145.69 : x
2. Step 2: Convert to fraction form
   7,150.24/10,720.38 = 3,145.69/x
3. Step 3: Cross multiply
   7,150.24x = 10,720.38 × 3,145.69
4. Step 4: Simplify right side
   7,150.24x = 33,722,957.06
5. Step 5: Solve for x
   x = 33,722,957.06/7,150.24
6. Step 6: Final answer
   x = 4,716.34