Finding the Fourth Proportional to 33,385.30, 50,077.85 and 8,427.34

Step by Step Solution

1. Step 1: Write the proportion equation
   33,385.30 : 50,077.85 = 8,427.34 : x
2. Step 2: Convert to fraction form
   33,385.30/50,077.85 = 8,427.34/x
3. Step 3: Cross multiply
   33,385.30x = 50,077.85 × 8,427.34
4. Step 4: Simplify right side
   33,385.30x = 422,023,088.88
5. Step 5: Solve for x
   x = 422,023,088.88/33,385.30
6. Step 6: Final answer
   x = 12,640.99