Finding the Fourth Proportional to 25,570.98, 35,333.72 and 19,920.32

Step by Step Solution

1. Step 1: Write the proportion equation
   25,570.98 : 35,333.72 = 19,920.32 : x
2. Step 2: Convert to fraction form
   25,570.98/35,333.72 = 19,920.32/x
3. Step 3: Cross multiply
   25,570.98x = 35,333.72 × 19,920.32
4. Step 4: Simplify right side
   25,570.98x = 703,858,940.12
5. Step 5: Solve for x
   x = 703,858,940.12/25,570.98
6. Step 6: Final answer
   x = 27,525.69