Finding the Fourth Proportional to 9,894.89, 13,654.76 and 5,418.42

Step by Step Solution

1. Step 1: Write the proportion equation
   9,894.89 : 13,654.76 = 5,418.42 : x
2. Step 2: Convert to fraction form
   9,894.89/13,654.76 = 5,418.42/x
3. Step 3: Cross multiply
   9,894.89x = 13,654.76 × 5,418.42
4. Step 4: Simplify right side
   9,894.89x = 73,987,224.68
5. Step 5: Solve for x
   x = 73,987,224.68/9,894.89
6. Step 6: Final answer
   x = 7,477.32