Finding the Fourth Proportional to 9,066.54, 13,591.61 and 3,221.79

Step by Step Solution

1. Step 1: Write the proportion equation
   9,066.54 : 13,591.61 = 3,221.79 : x
2. Step 2: Convert to fraction form
   9,066.54/13,591.61 = 3,221.79/x
3. Step 3: Cross multiply
   9,066.54x = 13,591.61 × 3,221.79
4. Step 4: Simplify right side
   9,066.54x = 43,789,258.19
5. Step 5: Solve for x
   x = 43,789,258.19/9,066.54
6. Step 6: Final answer
   x = 4,829.76