Finding the Fourth Proportional to 10,089.51, 13,923.97 and 8,408.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,089.51 : 13,923.97 = 8,408.10 : x
2. Step 2: Convert to fraction form
   10,089.51/13,923.97 = 8,408.10/x
3. Step 3: Cross multiply
   10,089.51x = 13,923.97 × 8,408.10
4. Step 4: Simplify right side
   10,089.51x = 117,074,020.50
5. Step 5: Solve for x
   x = 117,074,020.50/10,089.51
6. Step 6: Final answer
   x = 11,603.54