Finding the Fourth Proportional to 23,234.16, 34,830.72 and 8,439.60

Step by Step Solution

1. Step 1: Write the proportion equation
   23,234.16 : 34,830.72 = 8,439.60 : x
2. Step 2: Convert to fraction form
   23,234.16/34,830.72 = 8,439.60/x
3. Step 3: Cross multiply
   23,234.16x = 34,830.72 × 8,439.60
4. Step 4: Simplify right side
   23,234.16x = 293,957,344.51
5. Step 5: Solve for x
   x = 293,957,344.51/23,234.16
6. Step 6: Final answer
   x = 12,651.95