Finding the Fourth Proportional to 13,728.73, 18,945.76 and 7,441.10

Step by Step Solution

1. Step 1: Write the proportion equation
   13,728.73 : 18,945.76 = 7,441.10 : x
2. Step 2: Convert to fraction form
   13,728.73/18,945.76 = 7,441.10/x
3. Step 3: Cross multiply
   13,728.73x = 18,945.76 × 7,441.10
4. Step 4: Simplify right side
   13,728.73x = 140,977,323.50
5. Step 5: Solve for x
   x = 140,977,323.50/13,728.73
6. Step 6: Final answer
   x = 10,268.78