Finding the Fourth Proportional to 7,421.38, 10,241.50 and 4,109.38

Step by Step Solution

1. Step 1: Write the proportion equation
   7,421.38 : 10,241.50 = 4,109.38 : x
2. Step 2: Convert to fraction form
   7,421.38/10,241.50 = 4,109.38/x
3. Step 3: Cross multiply
   7,421.38x = 10,241.50 × 4,109.38
4. Step 4: Simplify right side
   7,421.38x = 42,086,215.27
5. Step 5: Solve for x
   x = 42,086,215.27/7,421.38
6. Step 6: Final answer
   x = 5,670.94