Finding the Fourth Proportional to 7,730.72, 10,665.60 and 5,079.56

Step by Step Solution

1. Step 1: Write the proportion equation
   7,730.72 : 10,665.60 = 5,079.56 : x
2. Step 2: Convert to fraction form
   7,730.72/10,665.60 = 5,079.56/x
3. Step 3: Cross multiply
   7,730.72x = 10,665.60 × 5,079.56
4. Step 4: Simplify right side
   7,730.72x = 54,176,555.14
5. Step 5: Solve for x
   x = 54,176,555.14/7,730.72
6. Step 6: Final answer
   x = 7,007.96