Finding the Fourth Proportional to 11,693.91, 16,116.72 and 8,854.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,693.91 : 16,116.72 = 8,854.50 : x
2. Step 2: Convert to fraction form
   11,693.91/16,116.72 = 8,854.50/x
3. Step 3: Cross multiply
   11,693.91x = 16,116.72 × 8,854.50
4. Step 4: Simplify right side
   11,693.91x = 142,705,497.24
5. Step 5: Solve for x
   x = 142,705,497.24/11,693.91
6. Step 6: Final answer
   x = 12,203.40