Finding the Fourth Proportional to 13,868.69, 19,136.58 and 7,900.48

Step by Step Solution

1. Step 1: Write the proportion equation
   13,868.69 : 19,136.58 = 7,900.48 : x
2. Step 2: Convert to fraction form
   13,868.69/19,136.58 = 7,900.48/x
3. Step 3: Cross multiply
   13,868.69x = 19,136.58 × 7,900.48
4. Step 4: Simplify right side
   13,868.69x = 151,188,167.56
5. Step 5: Solve for x
   x = 151,188,167.56/13,868.69
6. Step 6: Final answer
   x = 10,901.40