Finding the Fourth Proportional to 10,891.46, 16,336.86 and 3,100.28

Step by Step Solution

1. Step 1: Write the proportion equation
   10,891.46 : 16,336.86 = 3,100.28 : x
2. Step 2: Convert to fraction form
   10,891.46/16,336.86 = 3,100.28/x
3. Step 3: Cross multiply
   10,891.46x = 16,336.86 × 3,100.28
4. Step 4: Simplify right side
   10,891.46x = 50,648,747.01
5. Step 5: Solve for x
   x = 50,648,747.01/10,891.46
6. Step 6: Final answer
   x = 4,650.32