Finding the Fourth Proportional to 16,273.81, 22,459.53 and 9,900.86

Step by Step Solution

1. Step 1: Write the proportion equation
   16,273.81 : 22,459.53 = 9,900.86 : x
2. Step 2: Convert to fraction form
   16,273.81/22,459.53 = 9,900.86/x
3. Step 3: Cross multiply
   16,273.81x = 22,459.53 × 9,900.86
4. Step 4: Simplify right side
   16,273.81x = 222,368,594.50
5. Step 5: Solve for x
   x = 222,368,594.50/16,273.81
6. Step 6: Final answer
   x = 13,664.20