Finding the Fourth Proportional to 17,878.10, 24,679.89 and 12,222

Step by Step Solution

1. Step 1: Write the proportion equation
   17,878.10 : 24,679.89 = 12,222 : x
2. Step 2: Convert to fraction form
   17,878.10/24,679.89 = 12,222/x
3. Step 3: Cross multiply
   17,878.10x = 24,679.89 × 12,222
4. Step 4: Simplify right side
   17,878.10x = 301,637,615.58
5. Step 5: Solve for x
   x = 301,637,615.58/17,878.10
6. Step 6: Final answer
   x = 16,871.91