Finding the Fourth Proportional to 9,307.27, 12,806.49 and 9,085.83

Step by Step Solution

1. Step 1: Write the proportion equation
   9,307.27 : 12,806.49 = 9,085.83 : x
2. Step 2: Convert to fraction form
   9,307.27/12,806.49 = 9,085.83/x
3. Step 3: Cross multiply
   9,307.27x = 12,806.49 × 9,085.83
4. Step 4: Simplify right side
   9,307.27x = 116,357,591.04
5. Step 5: Solve for x
   x = 116,357,591.04/9,307.27
6. Step 6: Final answer
   x = 12,501.80