Finding the Fourth Proportional to 12,908.50, 17,803.98 and 8,936.26

Step by Step Solution

1. Step 1: Write the proportion equation
   12,908.50 : 17,803.98 = 8,936.26 : x
2. Step 2: Convert to fraction form
   12,908.50/17,803.98 = 8,936.26/x
3. Step 3: Cross multiply
   12,908.50x = 17,803.98 × 8,936.26
4. Step 4: Simplify right side
   12,908.50x = 159,100,994.31
5. Step 5: Solve for x
   x = 159,100,994.31/12,908.50
6. Step 6: Final answer
   x = 12,325.29