Finding the Fourth Proportional to 33,111.99, 49,699.20 and 12,072.37

Step by Step Solution

1. Step 1: Write the proportion equation
   33,111.99 : 49,699.20 = 12,072.37 : x
2. Step 2: Convert to fraction form
   33,111.99/49,699.20 = 12,072.37/x
3. Step 3: Cross multiply
   33,111.99x = 49,699.20 × 12,072.37
4. Step 4: Simplify right side
   33,111.99x = 599,987,131.10
5. Step 5: Solve for x
   x = 599,987,131.10/33,111.99
6. Step 6: Final answer
   x = 18,119.94