Finding the Fourth Proportional to 8,388.50, 12,584.33 and 2,840.34

Step by Step Solution

1. Step 1: Write the proportion equation
   8,388.50 : 12,584.33 = 2,840.34 : x
2. Step 2: Convert to fraction form
   8,388.50/12,584.33 = 2,840.34/x
3. Step 3: Cross multiply
   8,388.50x = 12,584.33 × 2,840.34
4. Step 4: Simplify right side
   8,388.50x = 35,743,819.51
5. Step 5: Solve for x
   x = 35,743,819.51/8,388.50
6. Step 6: Final answer
   x = 4,261.05