Finding the Fourth Proportional to 10,426.72, 14,388.96 and 5,711.08

Step by Step Solution

1. Step 1: Write the proportion equation
   10,426.72 : 14,388.96 = 5,711.08 : x
2. Step 2: Convert to fraction form
   10,426.72/14,388.96 = 5,711.08/x
3. Step 3: Cross multiply
   10,426.72x = 14,388.96 × 5,711.08
4. Step 4: Simplify right side
   10,426.72x = 82,176,501.68
5. Step 5: Solve for x
   x = 82,176,501.68/10,426.72
6. Step 6: Final answer
   x = 7,881.34