Finding the Fourth Proportional to 5,085.50, 7,621.02 and 2,305.31

Step by Step Solution

1. Step 1: Write the proportion equation
   5,085.50 : 7,621.02 = 2,305.31 : x
2. Step 2: Convert to fraction form
   5,085.50/7,621.02 = 2,305.31/x
3. Step 3: Cross multiply
   5,085.50x = 7,621.02 × 2,305.31
4. Step 4: Simplify right side
   5,085.50x = 17,568,775.51
5. Step 5: Solve for x
   x = 17,568,775.51/5,085.50
6. Step 6: Final answer
   x = 3,454.68