Finding the Fourth Proportional to 12,693.94, 17,519.78 and 7,391.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,693.94 : 17,519.78 = 7,391.88 : x
2. Step 2: Convert to fraction form
   12,693.94/17,519.78 = 7,391.88/x
3. Step 3: Cross multiply
   12,693.94x = 17,519.78 × 7,391.88
4. Step 4: Simplify right side
   12,693.94x = 129,504,111.39
5. Step 5: Solve for x
   x = 129,504,111.39/12,693.94
6. Step 6: Final answer
   x = 10,202.04