Finding the Fourth Proportional to 7,806.89, 10,774.55 and 5,020.49

Step by Step Solution

1. Step 1: Write the proportion equation
   7,806.89 : 10,774.55 = 5,020.49 : x
2. Step 2: Convert to fraction form
   7,806.89/10,774.55 = 5,020.49/x
3. Step 3: Cross multiply
   7,806.89x = 10,774.55 × 5,020.49
4. Step 4: Simplify right side
   7,806.89x = 54,093,520.53
5. Step 5: Solve for x
   x = 54,093,520.53/7,806.89
6. Step 6: Final answer
   x = 6,928.95