Finding the Fourth Proportional to 33,667.12, 50,502.24 and 12,889.12

Step by Step Solution

1. Step 1: Write the proportion equation
   33,667.12 : 50,502.24 = 12,889.12 : x
2. Step 2: Convert to fraction form
   33,667.12/50,502.24 = 12,889.12/x
3. Step 3: Cross multiply
   33,667.12x = 50,502.24 × 12,889.12
4. Step 4: Simplify right side
   33,667.12x = 650,929,431.63
5. Step 5: Solve for x
   x = 650,929,431.63/33,667.12
6. Step 6: Final answer
   x = 19,334.28