Finding the Fourth Proportional to 9,397.61, 12,963.78 and 5,811.42

Step by Step Solution

1. Step 1: Write the proportion equation
   9,397.61 : 12,963.78 = 5,811.42 : x
2. Step 2: Convert to fraction form
   9,397.61/12,963.78 = 5,811.42/x
3. Step 3: Cross multiply
   9,397.61x = 12,963.78 × 5,811.42
4. Step 4: Simplify right side
   9,397.61x = 75,338,010.81
5. Step 5: Solve for x
   x = 75,338,010.81/9,397.61
6. Step 6: Final answer
   x = 8,016.72