Finding the Fourth Proportional to 23,148.72, 34,715.88 and 8,355.72

Step by Step Solution

1. Step 1: Write the proportion equation
   23,148.72 : 34,715.88 = 8,355.72 : x
2. Step 2: Convert to fraction form
   23,148.72/34,715.88 = 8,355.72/x
3. Step 3: Cross multiply
   23,148.72x = 34,715.88 × 8,355.72
4. Step 4: Simplify right side
   23,148.72x = 290,076,172.83
5. Step 5: Solve for x
   x = 290,076,172.83/23,148.72
6. Step 6: Final answer
   x = 12,530.98