Finding the Fourth Proportional to 12,585.38, 18,878.18 and 3,820.29

Step by Step Solution

1. Step 1: Write the proportion equation
   12,585.38 : 18,878.18 = 3,820.29 : x
2. Step 2: Convert to fraction form
   12,585.38/18,878.18 = 3,820.29/x
3. Step 3: Cross multiply
   12,585.38x = 18,878.18 × 3,820.29
4. Step 4: Simplify right side
   12,585.38x = 72,120,122.27
5. Step 5: Solve for x
   x = 72,120,122.27/12,585.38
6. Step 6: Final answer
   x = 5,730.47