Finding the Fourth Proportional to 7,150.86, 9,867.78 and 4,007.25

Step by Step Solution

1. Step 1: Write the proportion equation
   7,150.86 : 9,867.78 = 4,007.25 : x
2. Step 2: Convert to fraction form
   7,150.86/9,867.78 = 4,007.25/x
3. Step 3: Cross multiply
   7,150.86x = 9,867.78 × 4,007.25
4. Step 4: Simplify right side
   7,150.86x = 39,542,661.41
5. Step 5: Solve for x
   x = 39,542,661.41/7,150.86
6. Step 6: Final answer
   x = 5,529.78