Finding the Fourth Proportional to 8,427.51, 12,640.79 and 2,584.10

Step by Step Solution

1. Step 1: Write the proportion equation
   8,427.51 : 12,640.79 = 2,584.10 : x
2. Step 2: Convert to fraction form
   8,427.51/12,640.79 = 2,584.10/x
3. Step 3: Cross multiply
   8,427.51x = 12,640.79 × 2,584.10
4. Step 4: Simplify right side
   8,427.51x = 32,665,103.50
5. Step 5: Solve for x
   x = 32,665,103.50/8,427.51
6. Step 6: Final answer
   x = 3,876.01