Finding the Fourth Proportional to 8,389.06, 12,584.58 and 2,545.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,389.06 : 12,584.58 = 2,545.72 : x
2. Step 2: Convert to fraction form
   8,389.06/12,584.58 = 2,545.72/x
3. Step 3: Cross multiply
   8,389.06x = 12,584.58 × 2,545.72
4. Step 4: Simplify right side
   8,389.06x = 32,036,817.00
5. Step 5: Solve for x
   x = 32,036,817.00/8,389.06
6. Step 6: Final answer
   x = 3,818.88