Finding the Fourth Proportional to 11,461.35, 17,190.18 and 3,139.42

Step by Step Solution

1. Step 1: Write the proportion equation
   11,461.35 : 17,190.18 = 3,139.42 : x
2. Step 2: Convert to fraction form
   11,461.35/17,190.18 = 3,139.42/x
3. Step 3: Cross multiply
   11,461.35x = 17,190.18 × 3,139.42
4. Step 4: Simplify right side
   11,461.35x = 53,967,179.74
5. Step 5: Solve for x
   x = 53,967,179.74/11,461.35
6. Step 6: Final answer
   x = 4,708.62