Finding the Fourth Proportional to 9,363.48, 12,921.59 and 5,171.73

Step by Step Solution

1. Step 1: Write the proportion equation
   9,363.48 : 12,921.59 = 5,171.73 : x
2. Step 2: Convert to fraction form
   9,363.48/12,921.59 = 5,171.73/x
3. Step 3: Cross multiply
   9,363.48x = 12,921.59 × 5,171.73
4. Step 4: Simplify right side
   9,363.48x = 66,826,948.79
5. Step 5: Solve for x
   x = 66,826,948.79/9,363.48
6. Step 6: Final answer
   x = 7,136.98