Finding the Fourth Proportional to 9,175.82, 12,660.46 and 5,399.15

Step by Step Solution

1. Step 1: Write the proportion equation
   9,175.82 : 12,660.46 = 5,399.15 : x
2. Step 2: Convert to fraction form
   9,175.82/12,660.46 = 5,399.15/x
3. Step 3: Cross multiply
   9,175.82x = 12,660.46 × 5,399.15
4. Step 4: Simplify right side
   9,175.82x = 68,355,632.31
5. Step 5: Solve for x
   x = 68,355,632.31/9,175.82
6. Step 6: Final answer
   x = 7,449.54