Finding the Fourth Proportional to 11,404.16, 17,111.90 and 6,403.42

Step by Step Solution

1. Step 1: Write the proportion equation
   11,404.16 : 17,111.90 = 6,403.42 : x
2. Step 2: Convert to fraction form
   11,404.16/17,111.90 = 6,403.42/x
3. Step 3: Cross multiply
   11,404.16x = 17,111.90 × 6,403.42
4. Step 4: Simplify right side
   11,404.16x = 109,574,597.14
5. Step 5: Solve for x
   x = 109,574,597.14/11,404.16
6. Step 6: Final answer
   x = 9,608.30