Finding the Fourth Proportional to 9,868.89, 13,618.83 and 5,392.65

Step by Step Solution

1. Step 1: Write the proportion equation
   9,868.89 : 13,618.83 = 5,392.65 : x
2. Step 2: Convert to fraction form
   9,868.89/13,618.83 = 5,392.65/x
3. Step 3: Cross multiply
   9,868.89x = 13,618.83 × 5,392.65
4. Step 4: Simplify right side
   9,868.89x = 73,441,583.60
5. Step 5: Solve for x
   x = 73,441,583.60/9,868.89
6. Step 6: Final answer
   x = 7,441.73