Finding the Fourth Proportional to 33,977.56, 50,986.37 and 12,935.30

Step by Step Solution

1. Step 1: Write the proportion equation
   33,977.56 : 50,986.37 = 12,935.30 : x
2. Step 2: Convert to fraction form
   33,977.56/50,986.37 = 12,935.30/x
3. Step 3: Cross multiply
   33,977.56x = 50,986.37 × 12,935.30
4. Step 4: Simplify right side
   33,977.56x = 659,523,991.86
5. Step 5: Solve for x
   x = 659,523,991.86/33,977.56
6. Step 6: Final answer
   x = 19,410.58