Finding the Fourth Proportional to 9,719.87, 14,572.31 and 3,144.29

Step by Step Solution

1. Step 1: Write the proportion equation
   9,719.87 : 14,572.31 = 3,144.29 : x
2. Step 2: Convert to fraction form
   9,719.87/14,572.31 = 3,144.29/x
3. Step 3: Cross multiply
   9,719.87x = 14,572.31 × 3,144.29
4. Step 4: Simplify right side
   9,719.87x = 45,819,480.03
5. Step 5: Solve for x
   x = 45,819,480.03/9,719.87
6. Step 6: Final answer
   x = 4,714.00