Finding the Fourth Proportional to 12,205.42, 18,301.61 and 5,787.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,205.42 : 18,301.61 = 5,787.25 : x
2. Step 2: Convert to fraction form
   12,205.42/18,301.61 = 5,787.25/x
3. Step 3: Cross multiply
   12,205.42x = 18,301.61 × 5,787.25
4. Step 4: Simplify right side
   12,205.42x = 105,915,961.19
5. Step 5: Solve for x
   x = 105,915,961.19/12,205.42
6. Step 6: Final answer
   x = 8,677.78