Finding the Fourth Proportional to 9,308.73, 12,808.52 and 9,087.30

Step by Step Solution

1. Step 1: Write the proportion equation
   9,308.73 : 12,808.52 = 9,087.30 : x
2. Step 2: Convert to fraction form
   9,308.73/12,808.52 = 9,087.30/x
3. Step 3: Cross multiply
   9,308.73x = 12,808.52 × 9,087.30
4. Step 4: Simplify right side
   9,308.73x = 116,394,863.80
5. Step 5: Solve for x
   x = 116,394,863.80/9,308.73
6. Step 6: Final answer
   x = 12,503.84