Finding the Fourth Proportional to 33,181.81, 49,728.39 and 12,102.05

Step by Step Solution

1. Step 1: Write the proportion equation
   33,181.81 : 49,728.39 = 12,102.05 : x
2. Step 2: Convert to fraction form
   33,181.81/49,728.39 = 12,102.05/x
3. Step 3: Cross multiply
   33,181.81x = 49,728.39 × 12,102.05
4. Step 4: Simplify right side
   33,181.81x = 601,815,401.69
5. Step 5: Solve for x
   x = 601,815,401.69/33,181.81
6. Step 6: Final answer
   x = 18,136.91