Finding the Fourth Proportional to 11,993.69, 17,988.41 and 7,057.55

Step by Step Solution

1. Step 1: Write the proportion equation
   11,993.69 : 17,988.41 = 7,057.55 : x
2. Step 2: Convert to fraction form
   11,993.69/17,988.41 = 7,057.55/x
3. Step 3: Cross multiply
   11,993.69x = 17,988.41 × 7,057.55
4. Step 4: Simplify right side
   11,993.69x = 126,954,165.61
5. Step 5: Solve for x
   x = 126,954,165.61/11,993.69
6. Step 6: Final answer
   x = 10,585.08