Finding the Fourth Proportional to 10,981.86, 16,456.50 and 5,771.94

Step by Step Solution

1. Step 1: Write the proportion equation
   10,981.86 : 16,456.50 = 5,771.94 : x
2. Step 2: Convert to fraction form
   10,981.86/16,456.50 = 5,771.94/x
3. Step 3: Cross multiply
   10,981.86x = 16,456.50 × 5,771.94
4. Step 4: Simplify right side
   10,981.86x = 94,985,930.61
5. Step 5: Solve for x
   x = 94,985,930.61/10,981.86
6. Step 6: Final answer
   x = 8,649.35