Finding the Fourth Proportional to 10,426.42, 14,388.36 and 5,710.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,426.42 : 14,388.36 = 5,710.72 : x
2. Step 2: Convert to fraction form
   10,426.42/14,388.36 = 5,710.72/x
3. Step 3: Cross multiply
   10,426.42x = 14,388.36 × 5,710.72
4. Step 4: Simplify right side
   10,426.42x = 82,167,895.22
5. Step 5: Solve for x
   x = 82,167,895.22/10,426.42
6. Step 6: Final answer
   x = 7,880.74