Finding the Fourth Proportional to 12,624.84, 17,418.78 and 8,148.78

Step by Step Solution

1. Step 1: Write the proportion equation
   12,624.84 : 17,418.78 = 8,148.78 : x
2. Step 2: Convert to fraction form
   12,624.84/17,418.78 = 8,148.78/x
3. Step 3: Cross multiply
   12,624.84x = 17,418.78 × 8,148.78
4. Step 4: Simplify right side
   12,624.84x = 141,941,806.09
5. Step 5: Solve for x
   x = 141,941,806.09/12,624.84
6. Step 6: Final answer
   x = 11,243.06