Finding the Fourth Proportional to 10,082.18, 13,912.70 and 5,545.20

Step by Step Solution

1. Step 1: Write the proportion equation
   10,082.18 : 13,912.70 = 5,545.20 : x
2. Step 2: Convert to fraction form
   10,082.18/13,912.70 = 5,545.20/x
3. Step 3: Cross multiply
   10,082.18x = 13,912.70 × 5,545.20
4. Step 4: Simplify right side
   10,082.18x = 77,148,704.04
5. Step 5: Solve for x
   x = 77,148,704.04/10,082.18
6. Step 6: Final answer
   x = 7,651.99