Finding the Fourth Proportional to 19,993.56, 29,993.99 and 10,003.53

Step by Step Solution

1. Step 1: Write the proportion equation
   19,993.56 : 29,993.99 = 10,003.53 : x
2. Step 2: Convert to fraction form
   19,993.56/29,993.99 = 10,003.53/x
3. Step 3: Cross multiply
   19,993.56x = 29,993.99 × 10,003.53
4. Step 4: Simplify right side
   19,993.56x = 300,045,778.78
5. Step 5: Solve for x
   x = 300,045,778.78/19,993.56
6. Step 6: Final answer
   x = 15,007.12