Finding the Fourth Proportional to 9,986.94, 13,782.01 and 5,510.74

Step by Step Solution

1. Step 1: Write the proportion equation
   9,986.94 : 13,782.01 = 5,510.74 : x
2. Step 2: Convert to fraction form
   9,986.94/13,782.01 = 5,510.74/x
3. Step 3: Cross multiply
   9,986.94x = 13,782.01 × 5,510.74
4. Step 4: Simplify right side
   9,986.94x = 75,949,073.79
5. Step 5: Solve for x
   x = 75,949,073.79/9,986.94
6. Step 6: Final answer
   x = 7,604.84