Finding the Fourth Proportional to 9,111.32, 13,657.83 and 3,183.60

Step by Step Solution

1. Step 1: Write the proportion equation
   9,111.32 : 13,657.83 = 3,183.60 : x
2. Step 2: Convert to fraction form
   9,111.32/13,657.83 = 3,183.60/x
3. Step 3: Cross multiply
   9,111.32x = 13,657.83 × 3,183.60
4. Step 4: Simplify right side
   9,111.32x = 43,481,067.59
5. Step 5: Solve for x
   x = 43,481,067.59/9,111.32
6. Step 6: Final answer
   x = 4,772.21