Finding the Fourth Proportional to 9,120.28, 13,685.89 and 3,277.35

Step by Step Solution

1. Step 1: Write the proportion equation
   9,120.28 : 13,685.89 = 3,277.35 : x
2. Step 2: Convert to fraction form
   9,120.28/13,685.89 = 3,277.35/x
3. Step 3: Cross multiply
   9,120.28x = 13,685.89 × 3,277.35
4. Step 4: Simplify right side
   9,120.28x = 44,853,451.59
5. Step 5: Solve for x
   x = 44,853,451.59/9,120.28
6. Step 6: Final answer
   x = 4,917.99