Finding the Fourth Proportional to 7,921.68, 10,929.69 and 5,529.12

Step by Step Solution

1. Step 1: Write the proportion equation
   7,921.68 : 10,929.69 = 5,529.12 : x
2. Step 2: Convert to fraction form
   7,921.68/10,929.69 = 5,529.12/x
3. Step 3: Cross multiply
   7,921.68x = 10,929.69 × 5,529.12
4. Step 4: Simplify right side
   7,921.68x = 60,431,567.57
5. Step 5: Solve for x
   x = 60,431,567.57/7,921.68
6. Step 6: Final answer
   x = 7,628.63