Finding the Fourth Proportional to 7,399.98, 10,212.17 and 4,042.75

Step by Step Solution

1. Step 1: Write the proportion equation
   7,399.98 : 10,212.17 = 4,042.75 : x
2. Step 2: Convert to fraction form
   7,399.98/10,212.17 = 4,042.75/x
3. Step 3: Cross multiply
   7,399.98x = 10,212.17 × 4,042.75
4. Step 4: Simplify right side
   7,399.98x = 41,285,250.27
5. Step 5: Solve for x
   x = 41,285,250.27/7,399.98
6. Step 6: Final answer
   x = 5,579.10