Finding the Fourth Proportional to 10,431.46, 14,395.59 and 5,715.43

Step by Step Solution

1. Step 1: Write the proportion equation
   10,431.46 : 14,395.59 = 5,715.43 : x
2. Step 2: Convert to fraction form
   10,431.46/14,395.59 = 5,715.43/x
3. Step 3: Cross multiply
   10,431.46x = 14,395.59 × 5,715.43
4. Step 4: Simplify right side
   10,431.46x = 82,276,986.95
5. Step 5: Solve for x
   x = 82,276,986.95/10,431.46
6. Step 6: Final answer
   x = 7,887.39