Finding the Fourth Proportional to 13,866.69, 19,136.81 and 7,900.23

Step by Step Solution

1. Step 1: Write the proportion equation
   13,866.69 : 19,136.81 = 7,900.23 : x
2. Step 2: Convert to fraction form
   13,866.69/19,136.81 = 7,900.23/x
3. Step 3: Cross multiply
   13,866.69x = 19,136.81 × 7,900.23
4. Step 4: Simplify right side
   13,866.69x = 151,185,247.54
5. Step 5: Solve for x
   x = 151,185,247.54/13,866.69
6. Step 6: Final answer
   x = 10,902.76