Finding the Fourth Proportional to 25,780, 35,593.56 and 19,801

Step by Step Solution

1. Step 1: Write the proportion equation
   25,780 : 35,593.56 = 19,801 : x
2. Step 2: Convert to fraction form
   25,780/35,593.56 = 19,801/x
3. Step 3: Cross multiply
   25,780x = 35,593.56 × 19,801
4. Step 4: Simplify right side
   25,780x = 704,788,081.56
5. Step 5: Solve for x
   x = 704,788,081.56/25,780
6. Step 6: Final answer
   x = 27,338.56