Finding the Fourth Proportional to 33,647.94, 50,426.46 and 12,860.10

Step by Step Solution

1. Step 1: Write the proportion equation
   33,647.94 : 50,426.46 = 12,860.10 : x
2. Step 2: Convert to fraction form
   33,647.94/50,426.46 = 12,860.10/x
3. Step 3: Cross multiply
   33,647.94x = 50,426.46 × 12,860.10
4. Step 4: Simplify right side
   33,647.94x = 648,489,318.25
5. Step 5: Solve for x
   x = 648,489,318.25/33,647.94
6. Step 6: Final answer
   x = 19,272.78