Finding the Fourth Proportional to 12,696.90, 19,039.59 and 8,250.18

Step by Step Solution

1. Step 1: Write the proportion equation
   12,696.90 : 19,039.59 = 8,250.18 : x
2. Step 2: Convert to fraction form
   12,696.90/19,039.59 = 8,250.18/x
3. Step 3: Cross multiply
   12,696.90x = 19,039.59 × 8,250.18
4. Step 4: Simplify right side
   12,696.90x = 157,080,044.63
5. Step 5: Solve for x
   x = 157,080,044.63/12,696.90
6. Step 6: Final answer
   x = 12,371.53