Finding the Fourth Proportional to 33,698.82, 50,549.42 and 12,636.72

Step by Step Solution

1. Step 1: Write the proportion equation
   33,698.82 : 50,549.42 = 12,636.72 : x
2. Step 2: Convert to fraction form
   33,698.82/50,549.42 = 12,636.72/x
3. Step 3: Cross multiply
   33,698.82x = 50,549.42 × 12,636.72
4. Step 4: Simplify right side
   33,698.82x = 638,778,803.52
5. Step 5: Solve for x
   x = 638,778,803.52/33,698.82
6. Step 6: Final answer
   x = 18,955.52