Finding the Fourth Proportional to 9,986.06, 13,781.52 and 5,510.67

Step by Step Solution

1. Step 1: Write the proportion equation
   9,986.06 : 13,781.52 = 5,510.67 : x
2. Step 2: Convert to fraction form
   9,986.06/13,781.52 = 5,510.67/x
3. Step 3: Cross multiply
   9,986.06x = 13,781.52 × 5,510.67
4. Step 4: Simplify right side
   9,986.06x = 75,945,408.82
5. Step 5: Solve for x
   x = 75,945,408.82/9,986.06
6. Step 6: Final answer
   x = 7,605.14