Finding the Fourth Proportional to 16,518.20, 24,789.45 and 10,969.70

Step by Step Solution

1. Step 1: Write the proportion equation
   16,518.20 : 24,789.45 = 10,969.70 : x
2. Step 2: Convert to fraction form
   16,518.20/24,789.45 = 10,969.70/x
3. Step 3: Cross multiply
   16,518.20x = 24,789.45 × 10,969.70
4. Step 4: Simplify right side
   16,518.20x = 271,932,705.72
5. Step 5: Solve for x
   x = 271,932,705.72/16,518.20
6. Step 6: Final answer
   x = 16,462.62