Finding the Fourth Proportional to 12,405.29, 18,608.94 and 5,827.89

Step by Step Solution

1. Step 1: Write the proportion equation
   12,405.29 : 18,608.94 = 5,827.89 : x
2. Step 2: Convert to fraction form
   12,405.29/18,608.94 = 5,827.89/x
3. Step 3: Cross multiply
   12,405.29x = 18,608.94 × 5,827.89
4. Step 4: Simplify right side
   12,405.29x = 108,450,855.34
5. Step 5: Solve for x
   x = 108,450,855.34/12,405.29
6. Step 6: Final answer
   x = 8,742.31