Finding the Fourth Proportional to 13,329, 18,394.76 and 7,663.96

Step by Step Solution

1. Step 1: Write the proportion equation
   13,329 : 18,394.76 = 7,663.96 : x
2. Step 2: Convert to fraction form
   13,329/18,394.76 = 7,663.96/x
3. Step 3: Cross multiply
   13,329x = 18,394.76 × 7,663.96
4. Step 4: Simplify right side
   13,329x = 140,976,704.85
5. Step 5: Solve for x
   x = 140,976,704.85/13,329
6. Step 6: Final answer
   x = 10,576.69