Finding the Fourth Proportional to 8,547.50, 12,821.73 and 2,391.98

Step by Step Solution

1. Step 1: Write the proportion equation
   8,547.50 : 12,821.73 = 2,391.98 : x
2. Step 2: Convert to fraction form
   8,547.50/12,821.73 = 2,391.98/x
3. Step 3: Cross multiply
   8,547.50x = 12,821.73 × 2,391.98
4. Step 4: Simplify right side
   8,547.50x = 30,669,321.73
5. Step 5: Solve for x
   x = 30,669,321.73/8,547.50
6. Step 6: Final answer
   x = 3,588.10