Finding the Fourth Proportional to 6,111.32, 9,167.78 and 1,728.89

Step by Step Solution

1. Step 1: Write the proportion equation
   6,111.32 : 9,167.78 = 1,728.89 : x
2. Step 2: Convert to fraction form
   6,111.32/9,167.78 = 1,728.89/x
3. Step 3: Cross multiply
   6,111.32x = 9,167.78 × 1,728.89
4. Step 4: Simplify right side
   6,111.32x = 15,850,097.44
5. Step 5: Solve for x
   x = 15,850,097.44/6,111.32
6. Step 6: Final answer
   x = 2,593.56