Finding the Fourth Proportional to 11,403.42, 17,105.61 and 3,612.06

Step by Step Solution

1. Step 1: Write the proportion equation
   11,403.42 : 17,105.61 = 3,612.06 : x
2. Step 2: Convert to fraction form
   11,403.42/17,105.61 = 3,612.06/x
3. Step 3: Cross multiply
   11,403.42x = 17,105.61 × 3,612.06
4. Step 4: Simplify right side
   11,403.42x = 61,786,489.66
5. Step 5: Solve for x
   x = 61,786,489.66/11,403.42
6. Step 6: Final answer
   x = 5,418.24