Finding the Fourth Proportional to 15,405, 23,105.18 and 4,310.25

Step by Step Solution

1. Step 1: Write the proportion equation
   15,405 : 23,105.18 = 4,310.25 : x
2. Step 2: Convert to fraction form
   15,405/23,105.18 = 4,310.25/x
3. Step 3: Cross multiply
   15,405x = 23,105.18 × 4,310.25
4. Step 4: Simplify right side
   15,405x = 99,589,080.54
5. Step 5: Solve for x
   x = 99,589,080.54/15,405
6. Step 6: Final answer
   x = 6,464.72