Finding the Fourth Proportional to 9,075.98, 13,616.40 and 8,208.47

Step by Step Solution

1. Step 1: Write the proportion equation
   9,075.98 : 13,616.40 = 8,208.47 : x
2. Step 2: Convert to fraction form
   9,075.98/13,616.40 = 8,208.47/x
3. Step 3: Cross multiply
   9,075.98x = 13,616.40 × 8,208.47
4. Step 4: Simplify right side
   9,075.98x = 111,769,875.73
5. Step 5: Solve for x
   x = 111,769,875.73/9,075.98
6. Step 6: Final answer
   x = 12,314.91