Finding the Fourth Proportional to 12,897.73, 19,350.38 and 5,404.87

Step by Step Solution

1. Step 1: Write the proportion equation
   12,897.73 : 19,350.38 = 5,404.87 : x
2. Step 2: Convert to fraction form
   12,897.73/19,350.38 = 5,404.87/x
3. Step 3: Cross multiply
   12,897.73x = 19,350.38 × 5,404.87
4. Step 4: Simplify right side
   12,897.73x = 104,586,288.35
5. Step 5: Solve for x
   x = 104,586,288.35/12,897.73
6. Step 6: Final answer
   x = 8,108.89