Finding the Fourth Proportional to 33,088.62, 49,632.78 and 8,128.46

Step by Step Solution

1. Step 1: Write the proportion equation
   33,088.62 : 49,632.78 = 8,128.46 : x
2. Step 2: Convert to fraction form
   33,088.62/49,632.78 = 8,128.46/x
3. Step 3: Cross multiply
   33,088.62x = 49,632.78 × 8,128.46
4. Step 4: Simplify right side
   33,088.62x = 403,438,066.92
5. Step 5: Solve for x
   x = 403,438,066.92/33,088.62
6. Step 6: Final answer
   x = 12,192.65