Finding the Fourth Proportional to 17,936.88, 26,875.59 and 12,646.09

Step by Step Solution

1. Step 1: Write the proportion equation
   17,936.88 : 26,875.59 = 12,646.09 : x
2. Step 2: Convert to fraction form
   17,936.88/26,875.59 = 12,646.09/x
3. Step 3: Cross multiply
   17,936.88x = 26,875.59 × 12,646.09
4. Step 4: Simplify right side
   17,936.88x = 339,871,116.11
5. Step 5: Solve for x
   x = 339,871,116.11/17,936.88
6. Step 6: Final answer
   x = 18,948.18