Finding the Fourth Proportional to 16,491.22, 22,753.92 and 9,778.50

Step by Step Solution

1. Step 1: Write the proportion equation
   16,491.22 : 22,753.92 = 9,778.50 : x
2. Step 2: Convert to fraction form
   16,491.22/22,753.92 = 9,778.50/x
3. Step 3: Cross multiply
   16,491.22x = 22,753.92 × 9,778.50
4. Step 4: Simplify right side
   16,491.22x = 222,499,044.06
5. Step 5: Solve for x
   x = 222,499,044.06/16,491.22
6. Step 6: Final answer
   x = 13,491.97