Finding the Fourth Proportional to 13,468.78, 18,589.98 and 8,744.86

Step by Step Solution

1. Step 1: Write the proportion equation
   13,468.78 : 18,589.98 = 8,744.86 : x
2. Step 2: Convert to fraction form
   13,468.78/18,589.98 = 8,744.86/x
3. Step 3: Cross multiply
   13,468.78x = 18,589.98 × 8,744.86
4. Step 4: Simplify right side
   13,468.78x = 162,566,772.50
5. Step 5: Solve for x
   x = 162,566,772.50/13,468.78
6. Step 6: Final answer
   x = 12,069.90