Finding the Fourth Proportional to 9,868.39, 13,618.13 and 5,392.16

Step by Step Solution

1. Step 1: Write the proportion equation
   9,868.39 : 13,618.13 = 5,392.16 : x
2. Step 2: Convert to fraction form
   9,868.39/13,618.13 = 5,392.16/x
3. Step 3: Cross multiply
   9,868.39x = 13,618.13 × 5,392.16
4. Step 4: Simplify right side
   9,868.39x = 73,431,108.90
5. Step 5: Solve for x
   x = 73,431,108.90/9,868.39
6. Step 6: Final answer
   x = 7,441.05