Finding the Fourth Proportional to 11,903.98, 17,854.41 and 3,139.59

Step by Step Solution

1. Step 1: Write the proportion equation
   11,903.98 : 17,854.41 = 3,139.59 : x
2. Step 2: Convert to fraction form
   11,903.98/17,854.41 = 3,139.59/x
3. Step 3: Cross multiply
   11,903.98x = 17,854.41 × 3,139.59
4. Step 4: Simplify right side
   11,903.98x = 56,055,527.09
5. Step 5: Solve for x
   x = 56,055,527.09/11,903.98
6. Step 6: Final answer
   x = 4,708.97