Finding the Fourth Proportional to 12,993.56, 17,932.02 and 7,404.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,993.56 : 17,932.02 = 7,404.56 : x
2. Step 2: Convert to fraction form
   12,993.56/17,932.02 = 7,404.56/x
3. Step 3: Cross multiply
   12,993.56x = 17,932.02 × 7,404.56
4. Step 4: Simplify right side
   12,993.56x = 132,778,718.01
5. Step 5: Solve for x
   x = 132,778,718.01/12,993.56
6. Step 6: Final answer
   x = 10,218.81