Finding the Fourth Proportional to 7,071.30, 10,605.96 and 3,914.55

Step by Step Solution

1. Step 1: Write the proportion equation
   7,071.30 : 10,605.96 = 3,914.55 : x
2. Step 2: Convert to fraction form
   7,071.30/10,605.96 = 3,914.55/x
3. Step 3: Cross multiply
   7,071.30x = 10,605.96 × 3,914.55
4. Step 4: Simplify right side
   7,071.30x = 41,517,560.72
5. Step 5: Solve for x
   x = 41,517,560.72/7,071.30
6. Step 6: Final answer
   x = 5,871.28