Finding the Fourth Proportional to 33,117.63, 49,707.72 and 12,078

Step by Step Solution

1. Step 1: Write the proportion equation
   33,117.63 : 49,707.72 = 12,078 : x
2. Step 2: Convert to fraction form
   33,117.63/49,707.72 = 12,078/x
3. Step 3: Cross multiply
   33,117.63x = 49,707.72 × 12,078
4. Step 4: Simplify right side
   33,117.63x = 600,369,842.16
5. Step 5: Solve for x
   x = 600,369,842.16/33,117.63
6. Step 6: Final answer
   x = 18,128.41