Finding the Fourth Proportional to 10,320.21, 14,241.42 and 5,783.28

Step by Step Solution

1. Step 1: Write the proportion equation
   10,320.21 : 14,241.42 = 5,783.28 : x
2. Step 2: Convert to fraction form
   10,320.21/14,241.42 = 5,783.28/x
3. Step 3: Cross multiply
   10,320.21x = 14,241.42 × 5,783.28
4. Step 4: Simplify right side
   10,320.21x = 82,362,119.46
5. Step 5: Solve for x
   x = 82,362,119.46/10,320.21
6. Step 6: Final answer
   x = 7,980.66