Finding the Fourth Proportional to 7,151.57, 10,729.56 and 3,206.15

Step by Step Solution

1. Step 1: Write the proportion equation
   7,151.57 : 10,729.56 = 3,206.15 : x
2. Step 2: Convert to fraction form
   7,151.57/10,729.56 = 3,206.15/x
3. Step 3: Cross multiply
   7,151.57x = 10,729.56 × 3,206.15
4. Step 4: Simplify right side
   7,151.57x = 34,400,578.79
5. Step 5: Solve for x
   x = 34,400,578.79/7,151.57
6. Step 6: Final answer
   x = 4,810.21