Finding the Fourth Proportional to 9,895.05, 13,654.56 and 5,418.85

Step by Step Solution

1. Step 1: Write the proportion equation
   9,895.05 : 13,654.56 = 5,418.85 : x
2. Step 2: Convert to fraction form
   9,895.05/13,654.56 = 5,418.85/x
3. Step 3: Cross multiply
   9,895.05x = 13,654.56 × 5,418.85
4. Step 4: Simplify right side
   9,895.05x = 73,992,012.46
5. Step 5: Solve for x
   x = 73,992,012.46/9,895.05
6. Step 6: Final answer
   x = 7,477.68