Finding the Fourth Proportional to 9,986.37, 13,781.03 and 5,510.54

Step by Step Solution

1. Step 1: Write the proportion equation
   9,986.37 : 13,781.03 = 5,510.54 : x
2. Step 2: Convert to fraction form
   9,986.37/13,781.03 = 5,510.54/x
3. Step 3: Cross multiply
   9,986.37x = 13,781.03 × 5,510.54
4. Step 4: Simplify right side
   9,986.37x = 75,940,820.60
5. Step 5: Solve for x
   x = 75,940,820.60/9,986.37
6. Step 6: Final answer
   x = 7,604.45