Finding the Fourth Proportional to 8,124.57, 12,194.89 and 5,787.18

Step by Step Solution

1. Step 1: Write the proportion equation
   8,124.57 : 12,194.89 = 5,787.18 : x
2. Step 2: Convert to fraction form
   8,124.57/12,194.89 = 5,787.18/x
3. Step 3: Cross multiply
   8,124.57x = 12,194.89 × 5,787.18
4. Step 4: Simplify right side
   8,124.57x = 70,574,009.04
5. Step 5: Solve for x
   x = 70,574,009.04/8,124.57
6. Step 6: Final answer
   x = 8,686.49