Finding the Fourth Proportional to 33,404, 50,108.96 and 8,780

Step by Step Solution

1. Step 1: Write the proportion equation
   33,404 : 50,108.96 = 8,780 : x
2. Step 2: Convert to fraction form
   33,404/50,108.96 = 8,780/x
3. Step 3: Cross multiply
   33,404x = 50,108.96 × 8,780
4. Step 4: Simplify right side
   33,404x = 439,956,668.80
5. Step 5: Solve for x
   x = 439,956,668.80/33,404
6. Step 6: Final answer
   x = 13,170.78