Finding the Fourth Proportional to 33,098.64, 49,648.48 and 8,138.72

Step by Step Solution

1. Step 1: Write the proportion equation
   33,098.64 : 49,648.48 = 8,138.72 : x
2. Step 2: Convert to fraction form
   33,098.64/49,648.48 = 8,138.72/x
3. Step 3: Cross multiply
   33,098.64x = 49,648.48 × 8,138.72
4. Step 4: Simplify right side
   33,098.64x = 404,075,077.15
5. Step 5: Solve for x
   x = 404,075,077.15/33,098.64
6. Step 6: Final answer
   x = 12,208.21