Finding the Fourth Proportional to 10,431.98, 14,395.71 and 6,242.54

Step by Step Solution

1. Step 1: Write the proportion equation
   10,431.98 : 14,395.71 = 6,242.54 : x
2. Step 2: Convert to fraction form
   10,431.98/14,395.71 = 6,242.54/x
3. Step 3: Cross multiply
   10,431.98x = 14,395.71 × 6,242.54
4. Step 4: Simplify right side
   10,431.98x = 89,865,795.50
5. Step 5: Solve for x
   x = 89,865,795.50/10,431.98
6. Step 6: Final answer
   x = 8,614.45