Finding the Fourth Proportional to 6,816.76, 9,404.94 and 4,021.72

Step by Step Solution

1. Step 1: Write the proportion equation
   6,816.76 : 9,404.94 = 4,021.72 : x
2. Step 2: Convert to fraction form
   6,816.76/9,404.94 = 4,021.72/x
3. Step 3: Cross multiply
   6,816.76x = 9,404.94 × 4,021.72
4. Step 4: Simplify right side
   6,816.76x = 37,824,035.30
5. Step 5: Solve for x
   x = 37,824,035.30/6,816.76
6. Step 6: Final answer
   x = 5,548.68