Finding the Fourth Proportional to 12,819.63, 17,684.24 and 8,842.71

Step by Step Solution

1. Step 1: Write the proportion equation
   12,819.63 : 17,684.24 = 8,842.71 : x
2. Step 2: Convert to fraction form
   12,819.63/17,684.24 = 8,842.71/x
3. Step 3: Cross multiply
   12,819.63x = 17,684.24 × 8,842.71
4. Step 4: Simplify right side
   12,819.63x = 156,376,561.68
5. Step 5: Solve for x
   x = 156,376,561.68/12,819.63
6. Step 6: Final answer
   x = 12,198.21