Finding the Fourth Proportional to 8,731.76, 13,100.71 and 3,800.76

Step by Step Solution

1. Step 1: Write the proportion equation
   8,731.76 : 13,100.71 = 3,800.76 : x
2. Step 2: Convert to fraction form
   8,731.76/13,100.71 = 3,800.76/x
3. Step 3: Cross multiply
   8,731.76x = 13,100.71 × 3,800.76
4. Step 4: Simplify right side
   8,731.76x = 49,792,613.73
5. Step 5: Solve for x
   x = 49,792,613.73/8,731.76
6. Step 6: Final answer
   x = 5,702.47