Finding the Fourth Proportional to 10,434.15, 15,644.30 and 3,411.70

Step by Step Solution

1. Step 1: Write the proportion equation
   10,434.15 : 15,644.30 = 3,411.70 : x
2. Step 2: Convert to fraction form
   10,434.15/15,644.30 = 3,411.70/x
3. Step 3: Cross multiply
   10,434.15x = 15,644.30 × 3,411.70
4. Step 4: Simplify right side
   10,434.15x = 53,373,665.33
5. Step 5: Solve for x
   x = 53,373,665.33/10,434.15
6. Step 6: Final answer
   x = 5,115.29