Finding the Fourth Proportional to 9,987.15, 13,782.06 and 5,510.73

Step by Step Solution

1. Step 1: Write the proportion equation
   9,987.15 : 13,782.06 = 5,510.73 : x
2. Step 2: Convert to fraction form
   9,987.15/13,782.06 = 5,510.73/x
3. Step 3: Cross multiply
   9,987.15x = 13,782.06 × 5,510.73
4. Step 4: Simplify right side
   9,987.15x = 75,949,211.50
5. Step 5: Solve for x
   x = 75,949,211.50/9,987.15
6. Step 6: Final answer
   x = 7,604.69