Finding the Fourth Proportional to 12,234.83, 18,351.32 and 3,915.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,234.83 : 18,351.32 = 3,915.72 : x
2. Step 2: Convert to fraction form
   12,234.83/18,351.32 = 3,915.72/x
3. Step 3: Cross multiply
   12,234.83x = 18,351.32 × 3,915.72
4. Step 4: Simplify right side
   12,234.83x = 71,858,611.17
5. Step 5: Solve for x
   x = 71,858,611.17/12,234.83
6. Step 6: Final answer
   x = 5,873.28