Finding the Fourth Proportional to 11,291.80, 16,933.56 and 3,894.16

Step by Step Solution

1. Step 1: Write the proportion equation
   11,291.80 : 16,933.56 = 3,894.16 : x
2. Step 2: Convert to fraction form
   11,291.80/16,933.56 = 3,894.16/x
3. Step 3: Cross multiply
   11,291.80x = 16,933.56 × 3,894.16
4. Step 4: Simplify right side
   11,291.80x = 65,941,992.01
5. Step 5: Solve for x
   x = 65,941,992.01/11,291.80
6. Step 6: Final answer
   x = 5,839.81