Finding the Fourth Proportional to 12,648.25, 18,979.82 and 5,628.59

Step by Step Solution

1. Step 1: Write the proportion equation
   12,648.25 : 18,979.82 = 5,628.59 : x
2. Step 2: Convert to fraction form
   12,648.25/18,979.82 = 5,628.59/x
3. Step 3: Cross multiply
   12,648.25x = 18,979.82 × 5,628.59
4. Step 4: Simplify right side
   12,648.25x = 106,829,594.29
5. Step 5: Solve for x
   x = 106,829,594.29/12,648.25
6. Step 6: Final answer
   x = 8,446.19