Finding the Fourth Proportional to 4,426.83, 6,111.90 and 3,085.28

Step by Step Solution

1. Step 1: Write the proportion equation
   4,426.83 : 6,111.90 = 3,085.28 : x
2. Step 2: Convert to fraction form
   4,426.83/6,111.90 = 3,085.28/x
3. Step 3: Cross multiply
   4,426.83x = 6,111.90 × 3,085.28
4. Step 4: Simplify right side
   4,426.83x = 18,856,892.27
5. Step 5: Solve for x
   x = 18,856,892.27/4,426.83
6. Step 6: Final answer
   x = 4,259.68