Finding the Fourth Proportional to 6,071.36, 9,106.72 and 1,689.12

Step by Step Solution

1. Step 1: Write the proportion equation
   6,071.36 : 9,106.72 = 1,689.12 : x
2. Step 2: Convert to fraction form
   6,071.36/9,106.72 = 1,689.12/x
3. Step 3: Cross multiply
   6,071.36x = 9,106.72 × 1,689.12
4. Step 4: Simplify right side
   6,071.36x = 15,382,342.89
5. Step 5: Solve for x
   x = 15,382,342.89/6,071.36
6. Step 6: Final answer
   x = 2,533.59