Finding the Fourth Proportional to 16,366.34, 22,587.71 and 9,991.62

Step by Step Solution

1. Step 1: Write the proportion equation
   16,366.34 : 22,587.71 = 9,991.62 : x
2. Step 2: Convert to fraction form
   16,366.34/22,587.71 = 9,991.62/x
3. Step 3: Cross multiply
   16,366.34x = 22,587.71 × 9,991.62
4. Step 4: Simplify right side
   16,366.34x = 225,687,765.03
5. Step 5: Solve for x
   x = 225,687,765.03/16,366.34
6. Step 6: Final answer
   x = 13,789.75