Finding the Fourth Proportional to 6,103.94, 9,155.76 and 1,721.30

Step by Step Solution

1. Step 1: Write the proportion equation
   6,103.94 : 9,155.76 = 1,721.30 : x
2. Step 2: Convert to fraction form
   6,103.94/9,155.76 = 1,721.30/x
3. Step 3: Cross multiply
   6,103.94x = 9,155.76 × 1,721.30
4. Step 4: Simplify right side
   6,103.94x = 15,759,809.69
5. Step 5: Solve for x
   x = 15,759,809.69/6,103.94
6. Step 6: Final answer
   x = 2,581.91