Finding the Fourth Proportional to 23,422.48, 35,147.55 and 8,641.72

Step by Step Solution

1. Step 1: Write the proportion equation
   23,422.48 : 35,147.55 = 8,641.72 : x
2. Step 2: Convert to fraction form
   23,422.48/35,147.55 = 8,641.72/x
3. Step 3: Cross multiply
   23,422.48x = 35,147.55 × 8,641.72
4. Step 4: Simplify right side
   23,422.48x = 303,735,285.79
5. Step 5: Solve for x
   x = 303,735,285.79/23,422.48
6. Step 6: Final answer
   x = 12,967.68