Finding the Fourth Proportional to 33,643.05, 50,426.84 and 13,647.89

Step by Step Solution

1. Step 1: Write the proportion equation
   33,643.05 : 50,426.84 = 13,647.89 : x
2. Step 2: Convert to fraction form
   33,643.05/50,426.84 = 13,647.89/x
3. Step 3: Cross multiply
   33,643.05x = 50,426.84 × 13,647.89
4. Step 4: Simplify right side
   33,643.05x = 688,219,965.37
5. Step 5: Solve for x
   x = 688,219,965.37/33,643.05
6. Step 6: Final answer
   x = 20,456.53