Finding the Fourth Proportional to 12,687.33, 19,031.16 and 5,667.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,687.33 : 19,031.16 = 5,667.72 : x
2. Step 2: Convert to fraction form
   12,687.33/19,031.16 = 5,667.72/x
3. Step 3: Cross multiply
   12,687.33x = 19,031.16 × 5,667.72
4. Step 4: Simplify right side
   12,687.33x = 107,863,286.16
5. Step 5: Solve for x
   x = 107,863,286.16/12,687.33
6. Step 6: Final answer
   x = 8,501.65