Finding the Fourth Proportional to 33,664.50, 50,504.04 and 12,888

Step by Step Solution

1. Step 1: Write the proportion equation
   33,664.50 : 50,504.04 = 12,888 : x
2. Step 2: Convert to fraction form
   33,664.50/50,504.04 = 12,888/x
3. Step 3: Cross multiply
   33,664.50x = 50,504.04 × 12,888
4. Step 4: Simplify right side
   33,664.50x = 650,896,067.52
5. Step 5: Solve for x
   x = 650,896,067.52/33,664.50
6. Step 6: Final answer
   x = 19,334.79