Finding the Fourth Proportional to 16,672.41, 23,016.28 and 12,887.02

Step by Step Solution

1. Step 1: Write the proportion equation
   16,672.41 : 23,016.28 = 12,887.02 : x
2. Step 2: Convert to fraction form
   16,672.41/23,016.28 = 12,887.02/x
3. Step 3: Cross multiply
   16,672.41x = 23,016.28 × 12,887.02
4. Step 4: Simplify right side
   16,672.41x = 296,611,260.69
5. Step 5: Solve for x
   x = 296,611,260.69/16,672.41
6. Step 6: Final answer
   x = 17,790.55