Finding the Fourth Proportional to 9,986.24, 13,781.08 and 5,510.15

Step by Step Solution

1. Step 1: Write the proportion equation
   9,986.24 : 13,781.08 = 5,510.15 : x
2. Step 2: Convert to fraction form
   9,986.24/13,781.08 = 5,510.15/x
3. Step 3: Cross multiply
   9,986.24x = 13,781.08 × 5,510.15
4. Step 4: Simplify right side
   9,986.24x = 75,935,786.96
5. Step 5: Solve for x
   x = 75,935,786.96/9,986.24
6. Step 6: Final answer
   x = 7,604.05