Finding the Fourth Proportional to 25,786.76, 35,592.18 and 15,845

Step by Step Solution

1. Step 1: Write the proportion equation
   25,786.76 : 35,592.18 = 15,845 : x
2. Step 2: Convert to fraction form
   25,786.76/35,592.18 = 15,845/x
3. Step 3: Cross multiply
   25,786.76x = 35,592.18 × 15,845
4. Step 4: Simplify right side
   25,786.76x = 563,958,092.10
5. Step 5: Solve for x
   x = 563,958,092.10/25,786.76
6. Step 6: Final answer
   x = 21,870.06