Finding the Fourth Proportional to 16,112.78, 22,234.18 and 9,398.99

Step by Step Solution

1. Step 1: Write the proportion equation
   16,112.78 : 22,234.18 = 9,398.99 : x
2. Step 2: Convert to fraction form
   16,112.78/22,234.18 = 9,398.99/x
3. Step 3: Cross multiply
   16,112.78x = 22,234.18 × 9,398.99
4. Step 4: Simplify right side
   16,112.78x = 208,978,885.19
5. Step 5: Solve for x
   x = 208,978,885.19/16,112.78
6. Step 6: Final answer
   x = 12,969.76