Finding the Fourth Proportional to 10,287.12, 14,182.50 and 7,724.03

Step by Step Solution

1. Step 1: Write the proportion equation
   10,287.12 : 14,182.50 = 7,724.03 : x
2. Step 2: Convert to fraction form
   10,287.12/14,182.50 = 7,724.03/x
3. Step 3: Cross multiply
   10,287.12x = 14,182.50 × 7,724.03
4. Step 4: Simplify right side
   10,287.12x = 109,546,055.48
5. Step 5: Solve for x
   x = 109,546,055.48/10,287.12
6. Step 6: Final answer
   x = 10,648.86