Finding the Fourth Proportional to 13,064.67, 18,031.54 and 7,399.73

Step by Step Solution

1. Step 1: Write the proportion equation
   13,064.67 : 18,031.54 = 7,399.73 : x
2. Step 2: Convert to fraction form
   13,064.67/18,031.54 = 7,399.73/x
3. Step 3: Cross multiply
   13,064.67x = 18,031.54 × 7,399.73
4. Step 4: Simplify right side
   13,064.67x = 133,428,527.48
5. Step 5: Solve for x
   x = 133,428,527.48/13,064.67
6. Step 6: Final answer
   x = 10,212.93