Finding the Fourth Proportional to 8,667.52, 11,961.60 and 4,942.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,667.52 : 11,961.60 = 4,942.72 : x
2. Step 2: Convert to fraction form
   8,667.52/11,961.60 = 4,942.72/x
3. Step 3: Cross multiply
   8,667.52x = 11,961.60 × 4,942.72
4. Step 4: Simplify right side
   8,667.52x = 59,122,839.55
5. Step 5: Solve for x
   x = 59,122,839.55/8,667.52
6. Step 6: Final answer
   x = 6,821.19