Finding the Fourth Proportional to 10,426.91, 14,389.16 and 5,711.22

Step by Step Solution

1. Step 1: Write the proportion equation
   10,426.91 : 14,389.16 = 5,711.22 : x
2. Step 2: Convert to fraction form
   10,426.91/14,389.16 = 5,711.22/x
3. Step 3: Cross multiply
   10,426.91x = 14,389.16 × 5,711.22
4. Step 4: Simplify right side
   10,426.91x = 82,179,629.82
5. Step 5: Solve for x
   x = 82,179,629.82/10,426.91
6. Step 6: Final answer
   x = 7,881.50