Finding the Fourth Proportional to 10,431.50, 14,395.48 and 5,715.82

Step by Step Solution

1. Step 1: Write the proportion equation
   10,431.50 : 14,395.48 = 5,715.82 : x
2. Step 2: Convert to fraction form
   10,431.50/14,395.48 = 5,715.82/x
3. Step 3: Cross multiply
   10,431.50x = 14,395.48 × 5,715.82
4. Step 4: Simplify right side
   10,431.50x = 82,281,972.49
5. Step 5: Solve for x
   x = 82,281,972.49/10,431.50
6. Step 6: Final answer
   x = 7,887.84