Finding the Fourth Proportional to 9,120.03, 13,680.72 and 3,276.69

Step by Step Solution

1. Step 1: Write the proportion equation
   9,120.03 : 13,680.72 = 3,276.69 : x
2. Step 2: Convert to fraction form
   9,120.03/13,680.72 = 3,276.69/x
3. Step 3: Cross multiply
   9,120.03x = 13,680.72 × 3,276.69
4. Step 4: Simplify right side
   9,120.03x = 44,827,478.42
5. Step 5: Solve for x
   x = 44,827,478.42/9,120.03
6. Step 6: Final answer
   x = 4,915.28