Finding the Fourth Proportional to 5,085.77, 7,019.05 and 3,069.28

Step by Step Solution

1. Step 1: Write the proportion equation
   5,085.77 : 7,019.05 = 3,069.28 : x
2. Step 2: Convert to fraction form
   5,085.77/7,019.05 = 3,069.28/x
3. Step 3: Cross multiply
   5,085.77x = 7,019.05 × 3,069.28
4. Step 4: Simplify right side
   5,085.77x = 21,543,404.56
5. Step 5: Solve for x
   x = 21,543,404.56/5,085.77
6. Step 6: Final answer
   x = 4,236.02