Finding the Fourth Proportional to 12,168.98, 18,245.84 and 5,586.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,168.98 : 18,245.84 = 5,586.72 : x
2. Step 2: Convert to fraction form
   12,168.98/18,245.84 = 5,586.72/x
3. Step 3: Cross multiply
   12,168.98x = 18,245.84 × 5,586.72
4. Step 4: Simplify right side
   12,168.98x = 101,934,399.24
5. Step 5: Solve for x
   x = 101,934,399.24/12,168.98
6. Step 6: Final answer
   x = 8,376.58