Finding the Fourth Proportional to 12,606.18, 18,908.49 and 5,584.15

Step by Step Solution

1. Step 1: Write the proportion equation
   12,606.18 : 18,908.49 = 5,584.15 : x
2. Step 2: Convert to fraction form
   12,606.18/18,908.49 = 5,584.15/x
3. Step 3: Cross multiply
   12,606.18x = 18,908.49 × 5,584.15
4. Step 4: Simplify right side
   12,606.18x = 105,587,844.43
5. Step 5: Solve for x
   x = 105,587,844.43/12,606.18
6. Step 6: Final answer
   x = 8,375.88