Finding the Fourth Proportional to 8,118.50, 12,173.49 and 5,485.86

Step by Step Solution

1. Step 1: Write the proportion equation
   8,118.50 : 12,173.49 = 5,485.86 : x
2. Step 2: Convert to fraction form
   8,118.50/12,173.49 = 5,485.86/x
3. Step 3: Cross multiply
   8,118.50x = 12,173.49 × 5,485.86
4. Step 4: Simplify right side
   8,118.50x = 66,782,061.85
5. Step 5: Solve for x
   x = 66,782,061.85/8,118.50
6. Step 6: Final answer
   x = 8,225.92