Finding the Fourth Proportional to 7,401.35, 11,049.29 and 7,141.85

Step by Step Solution

1. Step 1: Write the proportion equation
   7,401.35 : 11,049.29 = 7,141.85 : x
2. Step 2: Convert to fraction form
   7,401.35/11,049.29 = 7,141.85/x
3. Step 3: Cross multiply
   7,401.35x = 11,049.29 × 7,141.85
4. Step 4: Simplify right side
   7,401.35x = 78,912,371.79
5. Step 5: Solve for x
   x = 78,912,371.79/7,401.35
6. Step 6: Final answer
   x = 10,661.89