Finding the Fourth Proportional to 9,456.67, 14,180.89 and 3,215

Step by Step Solution

1. Step 1: Write the proportion equation
   9,456.67 : 14,180.89 = 3,215 : x
2. Step 2: Convert to fraction form
   9,456.67/14,180.89 = 3,215/x
3. Step 3: Cross multiply
   9,456.67x = 14,180.89 × 3,215
4. Step 4: Simplify right side
   9,456.67x = 45,591,569.39
5. Step 5: Solve for x
   x = 45,591,569.39/9,456.67
6. Step 6: Final answer
   x = 4,821.10