Finding the Fourth Proportional to 9,894.30, 13,653.52 and 5,418.10

Step by Step Solution

1. Step 1: Write the proportion equation
   9,894.30 : 13,653.52 = 5,418.10 : x
2. Step 2: Convert to fraction form
   9,894.30/13,653.52 = 5,418.10/x
3. Step 3: Cross multiply
   9,894.30x = 13,653.52 × 5,418.10
4. Step 4: Simplify right side
   9,894.30x = 73,976,136.71
5. Step 5: Solve for x
   x = 73,976,136.71/9,894.30
6. Step 6: Final answer
   x = 7,476.64