Finding the Fourth Proportional to 7,111.72, 10,665.27 and 2,949.49

Step by Step Solution

1. Step 1: Write the proportion equation
   7,111.72 : 10,665.27 = 2,949.49 : x
2. Step 2: Convert to fraction form
   7,111.72/10,665.27 = 2,949.49/x
3. Step 3: Cross multiply
   7,111.72x = 10,665.27 × 2,949.49
4. Step 4: Simplify right side
   7,111.72x = 31,457,080.55
5. Step 5: Solve for x
   x = 31,457,080.55/7,111.72
6. Step 6: Final answer
   x = 4,423.27