Finding the Fourth Proportional to 25,843.78, 35,667.72 and 15,770.08

Step by Step Solution

1. Step 1: Write the proportion equation
   25,843.78 : 35,667.72 = 15,770.08 : x
2. Step 2: Convert to fraction form
   25,843.78/35,667.72 = 15,770.08/x
3. Step 3: Cross multiply
   25,843.78x = 35,667.72 × 15,770.08
4. Step 4: Simplify right side
   25,843.78x = 562,482,797.82
5. Step 5: Solve for x
   x = 562,482,797.82/25,843.78
6. Step 6: Final answer
   x = 21,764.73