Finding the Fourth Proportional to 12,603.88, 18,908.69 and 3,839.48

Step by Step Solution

1. Step 1: Write the proportion equation
   12,603.88 : 18,908.69 = 3,839.48 : x
2. Step 2: Convert to fraction form
   12,603.88/18,908.69 = 3,839.48/x
3. Step 3: Cross multiply
   12,603.88x = 18,908.69 × 3,839.48
4. Step 4: Simplify right side
   12,603.88x = 72,599,423.34
5. Step 5: Solve for x
   x = 72,599,423.34/12,603.88
6. Step 6: Final answer
   x = 5,760.09