Finding the Fourth Proportional to 33,147.62, 49,719.81 and 12,369.50

Step by Step Solution

1. Step 1: Write the proportion equation
   33,147.62 : 49,719.81 = 12,369.50 : x
2. Step 2: Convert to fraction form
   33,147.62/49,719.81 = 12,369.50/x
3. Step 3: Cross multiply
   33,147.62x = 49,719.81 × 12,369.50
4. Step 4: Simplify right side
   33,147.62x = 615,009,189.80
5. Step 5: Solve for x
   x = 615,009,189.80/33,147.62
6. Step 6: Final answer
   x = 18,553.65