Finding the Fourth Proportional to 8,760.89, 13,077.47 and 7,653.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,760.89 : 13,077.47 = 7,653.72 : x
2. Step 2: Convert to fraction form
   8,760.89/13,077.47 = 7,653.72/x
3. Step 3: Cross multiply
   8,760.89x = 13,077.47 × 7,653.72
4. Step 4: Simplify right side
   8,760.89x = 100,091,255.42
5. Step 5: Solve for x
   x = 100,091,255.42/8,760.89
6. Step 6: Final answer
   x = 11,424.79