Finding the Fourth Proportional to 16,262.12, 22,443.30 and 9,978.60

Step by Step Solution

1. Step 1: Write the proportion equation
   16,262.12 : 22,443.30 = 9,978.60 : x
2. Step 2: Convert to fraction form
   16,262.12/22,443.30 = 9,978.60/x
3. Step 3: Cross multiply
   16,262.12x = 22,443.30 × 9,978.60
4. Step 4: Simplify right side
   16,262.12x = 223,952,713.38
5. Step 5: Solve for x
   x = 223,952,713.38/16,262.12
6. Step 6: Final answer
   x = 13,771.43