Finding the Fourth Proportional to 16,760, 23,128.80 and 10,136

Step by Step Solution

1. Step 1: Write the proportion equation
   16,760 : 23,128.80 = 10,136 : x
2. Step 2: Convert to fraction form
   16,760/23,128.80 = 10,136/x
3. Step 3: Cross multiply
   16,760x = 23,128.80 × 10,136
4. Step 4: Simplify right side
   16,760x = 234,433,516.80
5. Step 5: Solve for x
   x = 234,433,516.80/16,760
6. Step 6: Final answer
   x = 13,987.68