Finding the Fourth Proportional to 7,399.20, 10,210.96 and 4,042.02

Step by Step Solution

1. Step 1: Write the proportion equation
   7,399.20 : 10,210.96 = 4,042.02 : x
2. Step 2: Convert to fraction form
   7,399.20/10,210.96 = 4,042.02/x
3. Step 3: Cross multiply
   7,399.20x = 10,210.96 × 4,042.02
4. Step 4: Simplify right side
   7,399.20x = 41,272,904.54
5. Step 5: Solve for x
   x = 41,272,904.54/7,399.20
6. Step 6: Final answer
   x = 5,578.02