Finding the Fourth Proportional to 7,005.06, 9,666.88 and 3,861.18

Step by Step Solution

1. Step 1: Write the proportion equation
   7,005.06 : 9,666.88 = 3,861.18 : x
2. Step 2: Convert to fraction form
   7,005.06/9,666.88 = 3,861.18/x
3. Step 3: Cross multiply
   7,005.06x = 9,666.88 × 3,861.18
4. Step 4: Simplify right side
   7,005.06x = 37,325,563.72
5. Step 5: Solve for x
   x = 37,325,563.72/7,005.06
6. Step 6: Final answer
   x = 5,328.37