Finding the Fourth Proportional to 7,005.22, 9,667.24 and 3,861.40

Step by Step Solution

1. Step 1: Write the proportion equation
   7,005.22 : 9,667.24 = 3,861.40 : x
2. Step 2: Convert to fraction form
   7,005.22/9,667.24 = 3,861.40/x
3. Step 3: Cross multiply
   7,005.22x = 9,667.24 × 3,861.40
4. Step 4: Simplify right side
   7,005.22x = 37,329,080.54
5. Step 5: Solve for x
   x = 37,329,080.54/7,005.22
6. Step 6: Final answer
   x = 5,328.75