Finding the Fourth Proportional to 7,399.65, 10,211.72 and 4,042.61

Step by Step Solution

1. Step 1: Write the proportion equation
   7,399.65 : 10,211.72 = 4,042.61 : x
2. Step 2: Convert to fraction form
   7,399.65/10,211.72 = 4,042.61/x
3. Step 3: Cross multiply
   7,399.65x = 10,211.72 × 4,042.61
4. Step 4: Simplify right side
   7,399.65x = 41,281,991.15
5. Step 5: Solve for x
   x = 41,281,991.15/7,399.65
6. Step 6: Final answer
   x = 5,578.91