Finding the Fourth Proportional to 8,590.33, 12,885.89 and 2,350.21

Step by Step Solution

1. Step 1: Write the proportion equation
   8,590.33 : 12,885.89 = 2,350.21 : x
2. Step 2: Convert to fraction form
   8,590.33/12,885.89 = 2,350.21/x
3. Step 3: Cross multiply
   8,590.33x = 12,885.89 × 2,350.21
4. Step 4: Simplify right side
   8,590.33x = 30,284,547.54
5. Step 5: Solve for x
   x = 30,284,547.54/8,590.33
6. Step 6: Final answer
   x = 3,525.42