Finding the Fourth Proportional to 10,315.49, 14,220.42 and 7,622.75

Step by Step Solution

1. Step 1: Write the proportion equation
   10,315.49 : 14,220.42 = 7,622.75 : x
2. Step 2: Convert to fraction form
   10,315.49/14,220.42 = 7,622.75/x
3. Step 3: Cross multiply
   10,315.49x = 14,220.42 × 7,622.75
4. Step 4: Simplify right side
   10,315.49x = 108,398,706.56
5. Step 5: Solve for x
   x = 108,398,706.56/10,315.49
6. Step 6: Final answer
   x = 10,508.34