Finding the Fourth Proportional to 9,150.27, 12,627.60 and 5,171.63

Step by Step Solution

1. Step 1: Write the proportion equation
   9,150.27 : 12,627.60 = 5,171.63 : x
2. Step 2: Convert to fraction form
   9,150.27/12,627.60 = 5,171.63/x
3. Step 3: Cross multiply
   9,150.27x = 12,627.60 × 5,171.63
4. Step 4: Simplify right side
   9,150.27x = 65,305,307.12
5. Step 5: Solve for x
   x = 65,305,307.12/9,150.27
6. Step 6: Final answer
   x = 7,136.98