Finding the Fourth Proportional to 13,890.69, 19,168.41 and 7,601.85

Step by Step Solution

1. Step 1: Write the proportion equation
   13,890.69 : 19,168.41 = 7,601.85 : x
2. Step 2: Convert to fraction form
   13,890.69/19,168.41 = 7,601.85/x
3. Step 3: Cross multiply
   13,890.69x = 19,168.41 × 7,601.85
4. Step 4: Simplify right side
   13,890.69x = 145,715,377.56
5. Step 5: Solve for x
   x = 145,715,377.56/13,890.69
6. Step 6: Final answer
   x = 10,490.15