Finding the Fourth Proportional to 5,399.61, 7,451.42 and 3,042.51

Step by Step Solution

1. Step 1: Write the proportion equation
   5,399.61 : 7,451.42 = 3,042.51 : x
2. Step 2: Convert to fraction form
   5,399.61/7,451.42 = 3,042.51/x
3. Step 3: Cross multiply
   5,399.61x = 7,451.42 × 3,042.51
4. Step 4: Simplify right side
   5,399.61x = 22,671,019.86
5. Step 5: Solve for x
   x = 22,671,019.86/5,399.61
6. Step 6: Final answer
   x = 4,198.64