Finding the Fourth Proportional to 7,200.24, 10,804.56 and 3,913.68

Step by Step Solution

1. Step 1: Write the proportion equation
   7,200.24 : 10,804.56 = 3,913.68 : x
2. Step 2: Convert to fraction form
   7,200.24/10,804.56 = 3,913.68/x
3. Step 3: Cross multiply
   7,200.24x = 10,804.56 × 3,913.68
4. Step 4: Simplify right side
   7,200.24x = 42,285,590.38
5. Step 5: Solve for x
   x = 42,285,590.38/7,200.24
6. Step 6: Final answer
   x = 5,872.80