Finding the Fourth Proportional to 9,714.68, 14,571.91 and 3,140.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,714.68 : 14,571.91 = 3,140.72 : x
2. Step 2: Convert to fraction form
   9,714.68/14,571.91 = 3,140.72/x
3. Step 3: Cross multiply
   9,714.68x = 14,571.91 × 3,140.72
4. Step 4: Simplify right side
   9,714.68x = 45,766,289.18
5. Step 5: Solve for x
   x = 45,766,289.18/9,714.68
6. Step 6: Final answer
   x = 4,711.04