Finding the Fourth Proportional to 8,636.28, 12,951.76 and 2,394.76

Step by Step Solution

1. Step 1: Write the proportion equation
   8,636.28 : 12,951.76 = 2,394.76 : x
2. Step 2: Convert to fraction form
   8,636.28/12,951.76 = 2,394.76/x
3. Step 3: Cross multiply
   8,636.28x = 12,951.76 × 2,394.76
4. Step 4: Simplify right side
   8,636.28x = 31,016,356.78
5. Step 5: Solve for x
   x = 31,016,356.78/8,636.28
6. Step 6: Final answer
   x = 3,591.40