Finding the Fourth Proportional to 9,140.73, 12,613.77 and 5,162.42

Step by Step Solution

1. Step 1: Write the proportion equation
   9,140.73 : 12,613.77 = 5,162.42 : x
2. Step 2: Convert to fraction form
   9,140.73/12,613.77 = 5,162.42/x
3. Step 3: Cross multiply
   9,140.73x = 12,613.77 × 5,162.42
4. Step 4: Simplify right side
   9,140.73x = 65,117,515.45
5. Step 5: Solve for x
   x = 65,117,515.45/9,140.73
6. Step 6: Final answer
   x = 7,123.89