Finding the Fourth Proportional to 12,196.58, 18,297.12 and 3,878.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,196.58 : 18,297.12 = 3,878.69 : x
2. Step 2: Convert to fraction form
   12,196.58/18,297.12 = 3,878.69/x
3. Step 3: Cross multiply
   12,196.58x = 18,297.12 × 3,878.69
4. Step 4: Simplify right side
   12,196.58x = 70,968,779.43
5. Step 5: Solve for x
   x = 70,968,779.43/12,196.58
6. Step 6: Final answer
   x = 5,818.75