Finding the Fourth Proportional to 11,868.91, 17,804.57 and 3,103.90

Step by Step Solution

1. Step 1: Write the proportion equation
   11,868.91 : 17,804.57 = 3,103.90 : x
2. Step 2: Convert to fraction form
   11,868.91/17,804.57 = 3,103.90/x
3. Step 3: Cross multiply
   11,868.91x = 17,804.57 × 3,103.90
4. Step 4: Simplify right side
   11,868.91x = 55,263,604.82
5. Step 5: Solve for x
   x = 55,263,604.82/11,868.91
6. Step 6: Final answer
   x = 4,656.17