Finding the Fourth Proportional to 10,321.20, 14,243.42 and 5,605.46

Step by Step Solution

1. Step 1: Write the proportion equation
   10,321.20 : 14,243.42 = 5,605.46 : x
2. Step 2: Convert to fraction form
   10,321.20/14,243.42 = 5,605.46/x
3. Step 3: Cross multiply
   10,321.20x = 14,243.42 × 5,605.46
4. Step 4: Simplify right side
   10,321.20x = 79,840,921.07
5. Step 5: Solve for x
   x = 79,840,921.07/10,321.20
6. Step 6: Final answer
   x = 7,735.62