Finding the Fourth Proportional to 6,826.72, 9,420.78 and 3,996.04

Step by Step Solution

1. Step 1: Write the proportion equation
   6,826.72 : 9,420.78 = 3,996.04 : x
2. Step 2: Convert to fraction form
   6,826.72/9,420.78 = 3,996.04/x
3. Step 3: Cross multiply
   6,826.72x = 9,420.78 × 3,996.04
4. Step 4: Simplify right side
   6,826.72x = 37,645,813.71
5. Step 5: Solve for x
   x = 37,645,813.71/6,826.72
6. Step 6: Final answer
   x = 5,514.48