Finding the Fourth Proportional to 9,886.94, 13,643.95 and 5,410.69

Step by Step Solution

1. Step 1: Write the proportion equation
   9,886.94 : 13,643.95 = 5,410.69 : x
2. Step 2: Convert to fraction form
   9,886.94/13,643.95 = 5,410.69/x
3. Step 3: Cross multiply
   9,886.94x = 13,643.95 × 5,410.69
4. Step 4: Simplify right side
   9,886.94x = 73,823,183.83
5. Step 5: Solve for x
   x = 73,823,183.83/9,886.94
6. Step 6: Final answer
   x = 7,466.74