Finding the Fourth Proportional to 8,662.37, 12,989.43 and 4,498.20

Step by Step Solution

1. Step 1: Write the proportion equation
   8,662.37 : 12,989.43 = 4,498.20 : x
2. Step 2: Convert to fraction form
   8,662.37/12,989.43 = 4,498.20/x
3. Step 3: Cross multiply
   8,662.37x = 12,989.43 × 4,498.20
4. Step 4: Simplify right side
   8,662.37x = 58,429,054.03
5. Step 5: Solve for x
   x = 58,429,054.03/8,662.37
6. Step 6: Final answer
   x = 6,745.16