Finding the Fourth Proportional to 25,488.69, 35,191.71 and 15,932.31

Step by Step Solution

1. Step 1: Write the proportion equation
   25,488.69 : 35,191.71 = 15,932.31 : x
2. Step 2: Convert to fraction form
   25,488.69/35,191.71 = 15,932.31/x
3. Step 3: Cross multiply
   25,488.69x = 35,191.71 × 15,932.31
4. Step 4: Simplify right side
   25,488.69x = 560,685,233.15
5. Step 5: Solve for x
   x = 560,685,233.15/25,488.69
6. Step 6: Final answer
   x = 21,997.41