Finding the Fourth Proportional to 8,711.34, 12,031.61 and 5,740.41

Step by Step Solution

1. Step 1: Write the proportion equation
   8,711.34 : 12,031.61 = 5,740.41 : x
2. Step 2: Convert to fraction form
   8,711.34/12,031.61 = 5,740.41/x
3. Step 3: Cross multiply
   8,711.34x = 12,031.61 × 5,740.41
4. Step 4: Simplify right side
   8,711.34x = 69,066,345.66
5. Step 5: Solve for x
   x = 69,066,345.66/8,711.34
6. Step 6: Final answer
   x = 7,928.33