Finding the Fourth Proportional to 25,344, 34,974.72 and 15,408

Step by Step Solution

1. Step 1: Write the proportion equation
   25,344 : 34,974.72 = 15,408 : x
2. Step 2: Convert to fraction form
   25,344/34,974.72 = 15,408/x
3. Step 3: Cross multiply
   25,344x = 34,974.72 × 15,408
4. Step 4: Simplify right side
   25,344x = 538,890,485.76
5. Step 5: Solve for x
   x = 538,890,485.76/25,344
6. Step 6: Final answer
   x = 21,263.04