Finding the Fourth Proportional to 6,111.72, 9,166.28 and 1,729.22

Step by Step Solution

1. Step 1: Write the proportion equation
   6,111.72 : 9,166.28 = 1,729.22 : x
2. Step 2: Convert to fraction form
   6,111.72/9,166.28 = 1,729.22/x
3. Step 3: Cross multiply
   6,111.72x = 9,166.28 × 1,729.22
4. Step 4: Simplify right side
   6,111.72x = 15,850,460.22
5. Step 5: Solve for x
   x = 15,850,460.22/6,111.72
6. Step 6: Final answer
   x = 2,593.45