Finding the Fourth Proportional to 16,866.21, 25,293.37 and 5,618.50

Step by Step Solution

1. Step 1: Write the proportion equation
   16,866.21 : 25,293.37 = 5,618.50 : x
2. Step 2: Convert to fraction form
   16,866.21/25,293.37 = 5,618.50/x
3. Step 3: Cross multiply
   16,866.21x = 25,293.37 × 5,618.50
4. Step 4: Simplify right side
   16,866.21x = 142,110,644.79
5. Step 5: Solve for x
   x = 142,110,644.79/16,866.21
6. Step 6: Final answer
   x = 8,425.76