Finding the Fourth Proportional to 10,811.73, 14,911.55 and 7,453.78

Step by Step Solution

1. Step 1: Write the proportion equation
   10,811.73 : 14,911.55 = 7,453.78 : x
2. Step 2: Convert to fraction form
   10,811.73/14,911.55 = 7,453.78/x
3. Step 3: Cross multiply
   10,811.73x = 14,911.55 × 7,453.78
4. Step 4: Simplify right side
   10,811.73x = 111,147,338.61
5. Step 5: Solve for x
   x = 111,147,338.61/10,811.73
6. Step 6: Final answer
   x = 10,280.25