Finding the Fourth Proportional to 12,603.42, 18,906.06 and 3,838.35

Step by Step Solution

1. Step 1: Write the proportion equation
   12,603.42 : 18,906.06 = 3,838.35 : x
2. Step 2: Convert to fraction form
   12,603.42/18,906.06 = 3,838.35/x
3. Step 3: Cross multiply
   12,603.42x = 18,906.06 × 3,838.35
4. Step 4: Simplify right side
   12,603.42x = 72,568,075.40
5. Step 5: Solve for x
   x = 72,568,075.40/12,603.42
6. Step 6: Final answer
   x = 5,757.81