Finding the Fourth Proportional to 7,071.30, 10,606.21 and 2,911.82

Step by Step Solution

1. Step 1: Write the proportion equation
   7,071.30 : 10,606.21 = 2,911.82 : x
2. Step 2: Convert to fraction form
   7,071.30/10,606.21 = 2,911.82/x
3. Step 3: Cross multiply
   7,071.30x = 10,606.21 × 2,911.82
4. Step 4: Simplify right side
   7,071.30x = 30,883,314.09
5. Step 5: Solve for x
   x = 30,883,314.09/7,071.30
6. Step 6: Final answer
   x = 4,367.42