Finding the Fourth Proportional to 7,667.48, 11,491.60 and 3,279.78

Step by Step Solution

1. Step 1: Write the proportion equation
   7,667.48 : 11,491.60 = 3,279.78 : x
2. Step 2: Convert to fraction form
   7,667.48/11,491.60 = 3,279.78/x
3. Step 3: Cross multiply
   7,667.48x = 11,491.60 × 3,279.78
4. Step 4: Simplify right side
   7,667.48x = 37,689,919.85
5. Step 5: Solve for x
   x = 37,689,919.85/7,667.48
6. Step 6: Final answer
   x = 4,915.56