Finding the Fourth Proportional to 8,506.84, 12,758.59 and 8,084.89

Step by Step Solution

1. Step 1: Write the proportion equation
   8,506.84 : 12,758.59 = 8,084.89 : x
2. Step 2: Convert to fraction form
   8,506.84/12,758.59 = 8,084.89/x
3. Step 3: Cross multiply
   8,506.84x = 12,758.59 × 8,084.89
4. Step 4: Simplify right side
   8,506.84x = 103,151,798.84
5. Step 5: Solve for x
   x = 103,151,798.84/8,506.84
6. Step 6: Final answer
   x = 12,125.75