Finding the Third Proportional to 4,057.59 and 8,730.28

Step by Step Solution

1. Step 1: Write the proportion equation
   4,057.59 : 8,730.28 = 8,730.28 : x
2. Step 2: Convert to fraction form
   4,057.59/8,730.28 = 8,730.28/x
3. Step 3: Cross multiply
   4,057.59x = 8,730.28 × 8,730.28
4. Step 4: Simplify right side
   4,057.59x = 76,217,810.70
5. Step 5: Solve for x
   x = 76,217,810.70/4,057.59
6. Step 6: Final answer
   x = 18,783.99