Finding the Fourth Proportional to 33,018.25, 49,536.69 and 13,015.39

Step by Step Solution

1. Step 1: Write the proportion equation
   33,018.25 : 49,536.69 = 13,015.39 : x
2. Step 2: Convert to fraction form
   33,018.25/49,536.69 = 13,015.39/x
3. Step 3: Cross multiply
   33,018.25x = 49,536.69 × 13,015.39
4. Step 4: Simplify right side
   33,018.25x = 644,739,339.66
5. Step 5: Solve for x
   x = 644,739,339.66/33,018.25
6. Step 6: Final answer
   x = 19,526.76