Finding the Fourth Proportional to 16,978.22, 23,453.57 and 16,147.85

Step by Step Solution

1. Step 1: Write the proportion equation
   16,978.22 : 23,453.57 = 16,147.85 : x
2. Step 2: Convert to fraction form
   16,978.22/23,453.57 = 16,147.85/x
3. Step 3: Cross multiply
   16,978.22x = 23,453.57 × 16,147.85
4. Step 4: Simplify right side
   16,978.22x = 378,724,532.32
5. Step 5: Solve for x
   x = 378,724,532.32/16,978.22
6. Step 6: Final answer
   x = 22,306.50