Finding the Fourth Proportional to 9,868.56, 13,618.56 and 5,392.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,868.56 : 13,618.56 = 5,392.56 : x
2. Step 2: Convert to fraction form
   9,868.56/13,618.56 = 5,392.56/x
3. Step 3: Cross multiply
   9,868.56x = 13,618.56 × 5,392.56
4. Step 4: Simplify right side
   9,868.56x = 73,438,901.91
5. Step 5: Solve for x
   x = 73,438,901.91/9,868.56
6. Step 6: Final answer
   x = 7,441.70