Finding the Fourth Proportional to 9,894.65, 13,654.41 and 5,418.18

Step by Step Solution

1. Step 1: Write the proportion equation
   9,894.65 : 13,654.41 = 5,418.18 : x
2. Step 2: Convert to fraction form
   9,894.65/13,654.41 = 5,418.18/x
3. Step 3: Cross multiply
   9,894.65x = 13,654.41 × 5,418.18
4. Step 4: Simplify right side
   9,894.65x = 73,982,051.17
5. Step 5: Solve for x
   x = 73,982,051.17/9,894.65
6. Step 6: Final answer
   x = 7,476.98