Finding the Fourth Proportional to 9,986.10, 13,781.16 and 5,510.04

Step by Step Solution

1. Step 1: Write the proportion equation
   9,986.10 : 13,781.16 = 5,510.04 : x
2. Step 2: Convert to fraction form
   9,986.10/13,781.16 = 5,510.04/x
3. Step 3: Cross multiply
   9,986.10x = 13,781.16 × 5,510.04
4. Step 4: Simplify right side
   9,986.10x = 75,934,742.85
5. Step 5: Solve for x
   x = 75,934,742.85/9,986.10
6. Step 6: Final answer
   x = 7,604.04