Finding the Fourth Proportional to 10,891.86, 16,337.38 and 3,100.67

Step by Step Solution

1. Step 1: Write the proportion equation
   10,891.86 : 16,337.38 = 3,100.67 : x
2. Step 2: Convert to fraction form
   10,891.86/16,337.38 = 3,100.67/x
3. Step 3: Cross multiply
   10,891.86x = 16,337.38 × 3,100.67
4. Step 4: Simplify right side
   10,891.86x = 50,656,824.04
5. Step 5: Solve for x
   x = 50,656,824.04/10,891.86
6. Step 6: Final answer
   x = 4,650.89