Finding the Fourth Proportional to 6,105.23, 9,145.35 and 5,115.18

Step by Step Solution

1. Step 1: Write the proportion equation
   6,105.23 : 9,145.35 = 5,115.18 : x
2. Step 2: Convert to fraction form
   6,105.23/9,145.35 = 5,115.18/x
3. Step 3: Cross multiply
   6,105.23x = 9,145.35 × 5,115.18
4. Step 4: Simplify right side
   6,105.23x = 46,780,111.41
5. Step 5: Solve for x
   x = 46,780,111.41/6,105.23
6. Step 6: Final answer
   x = 7,662.31