Finding the Fourth Proportional to 9,715.72, 14,574.38 and 3,142.96

Step by Step Solution

1. Step 1: Write the proportion equation
   9,715.72 : 14,574.38 = 3,142.96 : x
2. Step 2: Convert to fraction form
   9,715.72/14,574.38 = 3,142.96/x
3. Step 3: Cross multiply
   9,715.72x = 14,574.38 × 3,142.96
4. Step 4: Simplify right side
   9,715.72x = 45,806,693.36
5. Step 5: Solve for x
   x = 45,806,693.36/9,715.72
6. Step 6: Final answer
   x = 4,714.70