Finding the Fourth Proportional to 11,290.73, 16,867.42 and 7,309.56

Step by Step Solution

1. Step 1: Write the proportion equation
   11,290.73 : 16,867.42 = 7,309.56 : x
2. Step 2: Convert to fraction form
   11,290.73/16,867.42 = 7,309.56/x
3. Step 3: Cross multiply
   11,290.73x = 16,867.42 × 7,309.56
4. Step 4: Simplify right side
   11,290.73x = 123,293,409.75
5. Step 5: Solve for x
   x = 123,293,409.75/11,290.73
6. Step 6: Final answer
   x = 10,919.88