Finding the Fourth Proportional to 7,667.78, 10,581.56 and 4,311.74

Step by Step Solution

1. Step 1: Write the proportion equation
   7,667.78 : 10,581.56 = 4,311.74 : x
2. Step 2: Convert to fraction form
   7,667.78/10,581.56 = 4,311.74/x
3. Step 3: Cross multiply
   7,667.78x = 10,581.56 × 4,311.74
4. Step 4: Simplify right side
   7,667.78x = 45,624,861.05
5. Step 5: Solve for x
   x = 45,624,861.05/7,667.78
6. Step 6: Final answer
   x = 5,950.21