Finding the Fourth Proportional to 16,499.50, 22,769.40 and 9,788.50

Step by Step Solution

1. Step 1: Write the proportion equation
   16,499.50 : 22,769.40 = 9,788.50 : x
2. Step 2: Convert to fraction form
   16,499.50/22,769.40 = 9,788.50/x
3. Step 3: Cross multiply
   16,499.50x = 22,769.40 × 9,788.50
4. Step 4: Simplify right side
   16,499.50x = 222,878,271.90
5. Step 5: Solve for x
   x = 222,878,271.90/16,499.50
6. Step 6: Final answer
   x = 13,508.18