Finding the Fourth Proportional to 10,426.86, 14,389.44 and 5,711.13

Step by Step Solution

1. Step 1: Write the proportion equation
   10,426.86 : 14,389.44 = 5,711.13 : x
2. Step 2: Convert to fraction form
   10,426.86/14,389.44 = 5,711.13/x
3. Step 3: Cross multiply
   10,426.86x = 14,389.44 × 5,711.13
4. Step 4: Simplify right side
   10,426.86x = 82,179,962.47
5. Step 5: Solve for x
   x = 82,179,962.47/10,426.86
6. Step 6: Final answer
   x = 7,881.56