Finding the Fourth Proportional to 9,986.33, 13,781.58 and 5,510.09

Step by Step Solution

1. Step 1: Write the proportion equation
   9,986.33 : 13,781.58 = 5,510.09 : x
2. Step 2: Convert to fraction form
   9,986.33/13,781.58 = 5,510.09/x
3. Step 3: Cross multiply
   9,986.33x = 13,781.58 × 5,510.09
4. Step 4: Simplify right side
   9,986.33x = 75,937,746.14
5. Step 5: Solve for x
   x = 75,937,746.14/9,986.33
6. Step 6: Final answer
   x = 7,604.17