Finding the Fourth Proportional to 20,456.84, 30,687.96 and 7,310.72

Step by Step Solution

1. Step 1: Write the proportion equation
   20,456.84 : 30,687.96 = 7,310.72 : x
2. Step 2: Convert to fraction form
   20,456.84/30,687.96 = 7,310.72/x
3. Step 3: Cross multiply
   20,456.84x = 30,687.96 × 7,310.72
4. Step 4: Simplify right side
   20,456.84x = 224,351,082.93
5. Step 5: Solve for x
   x = 224,351,082.93/20,456.84
6. Step 6: Final answer
   x = 10,967.04