Finding the Fourth Proportional to 9,894.58, 13,654.33 and 5,418.25

Step by Step Solution

1. Step 1: Write the proportion equation
   9,894.58 : 13,654.33 = 5,418.25 : x
2. Step 2: Convert to fraction form
   9,894.58/13,654.33 = 5,418.25/x
3. Step 3: Cross multiply
   9,894.58x = 13,654.33 × 5,418.25
4. Step 4: Simplify right side
   9,894.58x = 73,982,478.16
5. Step 5: Solve for x
   x = 73,982,478.16/9,894.58
6. Step 6: Final answer
   x = 7,477.07