Finding the Fourth Proportional to 9,155.48, 12,634.42 and 5,176.46

Step by Step Solution

1. Step 1: Write the proportion equation
   9,155.48 : 12,634.42 = 5,176.46 : x
2. Step 2: Convert to fraction form
   9,155.48/12,634.42 = 5,176.46/x
3. Step 3: Cross multiply
   9,155.48x = 12,634.42 × 5,176.46
4. Step 4: Simplify right side
   9,155.48x = 65,401,569.75
5. Step 5: Solve for x
   x = 65,401,569.75/9,155.48
6. Step 6: Final answer
   x = 7,143.43