Finding the Fourth Proportional to 7,005.60, 9,667.68 and 3,861.78

Step by Step Solution

1. Step 1: Write the proportion equation
   7,005.60 : 9,667.68 = 3,861.78 : x
2. Step 2: Convert to fraction form
   7,005.60/9,667.68 = 3,861.78/x
3. Step 3: Cross multiply
   7,005.60x = 9,667.68 × 3,861.78
4. Step 4: Simplify right side
   7,005.60x = 37,334,453.27
5. Step 5: Solve for x
   x = 37,334,453.27/7,005.60
6. Step 6: Final answer
   x = 5,329.23