Finding the Fourth Proportional to 7,150.86, 10,729.26 and 3,860.10

Step by Step Solution

1. Step 1: Write the proportion equation
   7,150.86 : 10,729.26 = 3,860.10 : x
2. Step 2: Convert to fraction form
   7,150.86/10,729.26 = 3,860.10/x
3. Step 3: Cross multiply
   7,150.86x = 10,729.26 × 3,860.10
4. Step 4: Simplify right side
   7,150.86x = 41,416,016.53
5. Step 5: Solve for x
   x = 41,416,016.53/7,150.86
6. Step 6: Final answer
   x = 5,791.75