Finding the Fourth Proportional to 33,039.78, 49,569.39 and 13,308.18

Step by Step Solution

1. Step 1: Write the proportion equation
   33,039.78 : 49,569.39 = 13,308.18 : x
2. Step 2: Convert to fraction form
   33,039.78/49,569.39 = 13,308.18/x
3. Step 3: Cross multiply
   33,039.78x = 49,569.39 × 13,308.18
4. Step 4: Simplify right side
   33,039.78x = 659,678,364.61
5. Step 5: Solve for x
   x = 659,678,364.61/33,039.78
6. Step 6: Final answer
   x = 19,966.19