Finding the Fourth Proportional to 8,272.70, 12,402.56 and 5,667.74

Step by Step Solution

1. Step 1: Write the proportion equation
   8,272.70 : 12,402.56 = 5,667.74 : x
2. Step 2: Convert to fraction form
   8,272.70/12,402.56 = 5,667.74/x
3. Step 3: Cross multiply
   8,272.70x = 12,402.56 × 5,667.74
4. Step 4: Simplify right side
   8,272.70x = 70,294,485.41
5. Step 5: Solve for x
   x = 70,294,485.41/8,272.70
6. Step 6: Final answer
   x = 8,497.16