Finding the Fourth Proportional to 10,396.21, 14,346.73 and 5,680.49

Step by Step Solution

1. Step 1: Write the proportion equation
   10,396.21 : 14,346.73 = 5,680.49 : x
2. Step 2: Convert to fraction form
   10,396.21/14,346.73 = 5,680.49/x
3. Step 3: Cross multiply
   10,396.21x = 14,346.73 × 5,680.49
4. Step 4: Simplify right side
   10,396.21x = 81,496,456.30
5. Step 5: Solve for x
   x = 81,496,456.30/10,396.21
6. Step 6: Final answer
   x = 7,839.05