Finding the Fourth Proportional to 18,701.67, 25,796.83 and 12,736.02

Step by Step Solution

1. Step 1: Write the proportion equation
   18,701.67 : 25,796.83 = 12,736.02 : x
2. Step 2: Convert to fraction form
   18,701.67/25,796.83 = 12,736.02/x
3. Step 3: Cross multiply
   18,701.67x = 25,796.83 × 12,736.02
4. Step 4: Simplify right side
   18,701.67x = 328,548,942.82
5. Step 5: Solve for x
   x = 328,548,942.82/18,701.67
6. Step 6: Final answer
   x = 17,567.89