Finding the Fourth Proportional to 10,890.86, 16,335.88 and 3,099.67

Step by Step Solution

1. Step 1: Write the proportion equation
   10,890.86 : 16,335.88 = 3,099.67 : x
2. Step 2: Convert to fraction form
   10,890.86/16,335.88 = 3,099.67/x
3. Step 3: Cross multiply
   10,890.86x = 16,335.88 × 3,099.67
4. Step 4: Simplify right side
   10,890.86x = 50,635,788.57
5. Step 5: Solve for x
   x = 50,635,788.57/10,890.86
6. Step 6: Final answer
   x = 4,649.39