Finding the Fourth Proportional to 10,139.63, 15,209.37 and 2,744.82

Step by Step Solution

1. Step 1: Write the proportion equation
   10,139.63 : 15,209.37 = 2,744.82 : x
2. Step 2: Convert to fraction form
   10,139.63/15,209.37 = 2,744.82/x
3. Step 3: Cross multiply
   10,139.63x = 15,209.37 × 2,744.82
4. Step 4: Simplify right side
   10,139.63x = 41,746,982.96
5. Step 5: Solve for x
   x = 41,746,982.96/10,139.63
6. Step 6: Final answer
   x = 4,117.21