Finding the Fourth Proportional to 10,913.72, 15,045.02 and 8,676.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,913.72 : 15,045.02 = 8,676.50 : x
2. Step 2: Convert to fraction form
   10,913.72/15,045.02 = 8,676.50/x
3. Step 3: Cross multiply
   10,913.72x = 15,045.02 × 8,676.50
4. Step 4: Simplify right side
   10,913.72x = 130,538,072.65
5. Step 5: Solve for x
   x = 130,538,072.65/10,913.72
6. Step 6: Final answer
   x = 11,960.91