Finding the Fourth Proportional to 23,439.76, 35,158.52 and 8,647.60

Step by Step Solution

1. Step 1: Write the proportion equation
   23,439.76 : 35,158.52 = 8,647.60 : x
2. Step 2: Convert to fraction form
   23,439.76/35,158.52 = 8,647.60/x
3. Step 3: Cross multiply
   23,439.76x = 35,158.52 × 8,647.60
4. Step 4: Simplify right side
   23,439.76x = 304,036,817.55
5. Step 5: Solve for x
   x = 304,036,817.55/23,439.76
6. Step 6: Final answer
   x = 12,970.99