Finding the Fourth Proportional to 9,868.15, 14,806.33 and 5,187.03

Step by Step Solution

1. Step 1: Write the proportion equation
   9,868.15 : 14,806.33 = 5,187.03 : x
2. Step 2: Convert to fraction form
   9,868.15/14,806.33 = 5,187.03/x
3. Step 3: Cross multiply
   9,868.15x = 14,806.33 × 5,187.03
4. Step 4: Simplify right side
   9,868.15x = 76,800,951.01
5. Step 5: Solve for x
   x = 76,800,951.01/9,868.15
6. Step 6: Final answer
   x = 7,782.71