Finding the Fourth Proportional to 7,824.68, 11,728.72 and 3,661.18

Step by Step Solution

1. Step 1: Write the proportion equation
   7,824.68 : 11,728.72 = 3,661.18 : x
2. Step 2: Convert to fraction form
   7,824.68/11,728.72 = 3,661.18/x
3. Step 3: Cross multiply
   7,824.68x = 11,728.72 × 3,661.18
4. Step 4: Simplify right side
   7,824.68x = 42,940,955.09
5. Step 5: Solve for x
   x = 42,940,955.09/7,824.68
6. Step 6: Final answer
   x = 5,487.89