Finding the Fourth Proportional to 9,666.72, 13,346.49 and 7,424.58

Step by Step Solution

1. Step 1: Write the proportion equation
   9,666.72 : 13,346.49 = 7,424.58 : x
2. Step 2: Convert to fraction form
   9,666.72/13,346.49 = 7,424.58/x
3. Step 3: Cross multiply
   9,666.72x = 13,346.49 × 7,424.58
4. Step 4: Simplify right side
   9,666.72x = 99,092,082.72
5. Step 5: Solve for x
   x = 99,092,082.72/9,666.72
6. Step 6: Final answer
   x = 10,250.85