Finding the Fourth Proportional to 33,681, 50,528.79 and 12,904.50

Step by Step Solution

1. Step 1: Write the proportion equation
   33,681 : 50,528.79 = 12,904.50 : x
2. Step 2: Convert to fraction form
   33,681/50,528.79 = 12,904.50/x
3. Step 3: Cross multiply
   33,681x = 50,528.79 × 12,904.50
4. Step 4: Simplify right side
   33,681x = 652,048,770.56
5. Step 5: Solve for x
   x = 652,048,770.56/33,681
6. Step 6: Final answer
   x = 19,359.54