Finding the Fourth Proportional to 11,868.79, 17,804.20 and 3,103.69

Step by Step Solution

1. Step 1: Write the proportion equation
   11,868.79 : 17,804.20 = 3,103.69 : x
2. Step 2: Convert to fraction form
   11,868.79/17,804.20 = 3,103.69/x
3. Step 3: Cross multiply
   11,868.79x = 17,804.20 × 3,103.69
4. Step 4: Simplify right side
   11,868.79x = 55,258,717.50
5. Step 5: Solve for x
   x = 55,258,717.50/11,868.79
6. Step 6: Final answer
   x = 4,655.80