Finding the Fourth Proportional to 11,867.55, 17,799.78 and 3,103.14

Step by Step Solution

1. Step 1: Write the proportion equation
   11,867.55 : 17,799.78 = 3,103.14 : x
2. Step 2: Convert to fraction form
   11,867.55/17,799.78 = 3,103.14/x
3. Step 3: Cross multiply
   11,867.55x = 17,799.78 × 3,103.14
4. Step 4: Simplify right side
   11,867.55x = 55,235,209.31
5. Step 5: Solve for x
   x = 55,235,209.31/11,867.55
6. Step 6: Final answer
   x = 4,654.31