Finding the Fourth Proportional to 12,839.49, 19,250.93 and 8,443.62

Step by Step Solution

1. Step 1: Write the proportion equation
   12,839.49 : 19,250.93 = 8,443.62 : x
2. Step 2: Convert to fraction form
   12,839.49/19,250.93 = 8,443.62/x
3. Step 3: Cross multiply
   12,839.49x = 19,250.93 × 8,443.62
4. Step 4: Simplify right side
   12,839.49x = 162,547,495.35
5. Step 5: Solve for x
   x = 162,547,495.35/12,839.49
6. Step 6: Final answer
   x = 12,659.97