Finding the Fourth Proportional to 7,421.50, 10,241.67 and 4,109.50

Step by Step Solution

1. Step 1: Write the proportion equation
   7,421.50 : 10,241.67 = 4,109.50 : x
2. Step 2: Convert to fraction form
   7,421.50/10,241.67 = 4,109.50/x
3. Step 3: Cross multiply
   7,421.50x = 10,241.67 × 4,109.50
4. Step 4: Simplify right side
   7,421.50x = 42,088,142.87
5. Step 5: Solve for x
   x = 42,088,142.87/7,421.50
6. Step 6: Final answer
   x = 5,671.11