Finding the Fourth Proportional to 33,111.63, 49,640.70 and 10,911.15

Step by Step Solution

1. Step 1: Write the proportion equation
   33,111.63 : 49,640.70 = 10,911.15 : x
2. Step 2: Convert to fraction form
   33,111.63/49,640.70 = 10,911.15/x
3. Step 3: Cross multiply
   33,111.63x = 49,640.70 × 10,911.15
4. Step 4: Simplify right side
   33,111.63x = 541,637,123.81
5. Step 5: Solve for x
   x = 541,637,123.81/33,111.63
6. Step 6: Final answer
   x = 16,357.91