Finding the Fourth Proportional to 16,862.61, 23,271.98 and 12,606.30

Step by Step Solution

1. Step 1: Write the proportion equation
   16,862.61 : 23,271.98 = 12,606.30 : x
2. Step 2: Convert to fraction form
   16,862.61/23,271.98 = 12,606.30/x
3. Step 3: Cross multiply
   16,862.61x = 23,271.98 × 12,606.30
4. Step 4: Simplify right side
   16,862.61x = 293,373,498.44
5. Step 5: Solve for x
   x = 293,373,498.44/16,862.61
6. Step 6: Final answer
   x = 17,397.87