Finding the Fourth Proportional to 25,981.98, 38,977.83 and 10,400.82

Step by Step Solution

1. Step 1: Write the proportion equation
   25,981.98 : 38,977.83 = 10,400.82 : x
2. Step 2: Convert to fraction form
   25,981.98/38,977.83 = 10,400.82/x
3. Step 3: Cross multiply
   25,981.98x = 38,977.83 × 10,400.82
4. Step 4: Simplify right side
   25,981.98x = 405,401,393.82
5. Step 5: Solve for x
   x = 405,401,393.82/25,981.98
6. Step 6: Final answer
   x = 15,603.18