Finding the Fourth Proportional to 8,636.31, 12,951.72 and 3,704.63

Step by Step Solution

1. Step 1: Write the proportion equation
   8,636.31 : 12,951.72 = 3,704.63 : x
2. Step 2: Convert to fraction form
   8,636.31/12,951.72 = 3,704.63/x
3. Step 3: Cross multiply
   8,636.31x = 12,951.72 × 3,704.63
4. Step 4: Simplify right side
   8,636.31x = 47,981,265.71
5. Step 5: Solve for x
   x = 47,981,265.71/8,636.31
6. Step 6: Final answer
   x = 5,555.76