Finding the Fourth Proportional to 10,431.87, 14,396.31 and 5,716.59

Step by Step Solution

1. Step 1: Write the proportion equation
   10,431.87 : 14,396.31 = 5,716.59 : x
2. Step 2: Convert to fraction form
   10,431.87/14,396.31 = 5,716.59/x
3. Step 3: Cross multiply
   10,431.87x = 14,396.31 × 5,716.59
4. Step 4: Simplify right side
   10,431.87x = 82,297,801.78
5. Step 5: Solve for x
   x = 82,297,801.78/10,431.87
6. Step 6: Final answer
   x = 7,889.07