Finding the Fourth Proportional to 9,155.14, 12,633.78 and 5,176.42

Step by Step Solution

1. Step 1: Write the proportion equation
   9,155.14 : 12,633.78 = 5,176.42 : x
2. Step 2: Convert to fraction form
   9,155.14/12,633.78 = 5,176.42/x
3. Step 3: Cross multiply
   9,155.14x = 12,633.78 × 5,176.42
4. Step 4: Simplify right side
   9,155.14x = 65,397,751.47
5. Step 5: Solve for x
   x = 65,397,751.47/9,155.14
6. Step 6: Final answer
   x = 7,143.28