Finding the Fourth Proportional to 28,196.97, 42,493.63 and 25,389.24

Step by Step Solution

1. Step 1: Write the proportion equation
   28,196.97 : 42,493.63 = 25,389.24 : x
2. Step 2: Convert to fraction form
   28,196.97/42,493.63 = 25,389.24/x
3. Step 3: Cross multiply
   28,196.97x = 42,493.63 × 25,389.24
4. Step 4: Simplify right side
   28,196.97x = 1,078,880,970.54
5. Step 5: Solve for x
   x = 1,078,880,970.54/28,196.97
6. Step 6: Final answer
   x = 38,262.30