Finding the Fourth Proportional to 16,148.94, 22,283.17 and 8,978.28

Step by Step Solution

1. Step 1: Write the proportion equation
   16,148.94 : 22,283.17 = 8,978.28 : x
2. Step 2: Convert to fraction form
   16,148.94/22,283.17 = 8,978.28/x
3. Step 3: Cross multiply
   16,148.94x = 22,283.17 × 8,978.28
4. Step 4: Simplify right side
   16,148.94x = 200,064,539.55
5. Step 5: Solve for x
   x = 200,064,539.55/16,148.94
6. Step 6: Final answer
   x = 12,388.71