Finding the Fourth Proportional to 8,598.72, 12,902.72 and 3,404.64

Step by Step Solution

1. Step 1: Write the proportion equation
   8,598.72 : 12,902.72 = 3,404.64 : x
2. Step 2: Convert to fraction form
   8,598.72/12,902.72 = 3,404.64/x
3. Step 3: Cross multiply
   8,598.72x = 12,902.72 × 3,404.64
4. Step 4: Simplify right side
   8,598.72x = 43,929,116.62
5. Step 5: Solve for x
   x = 43,929,116.62/8,598.72
6. Step 6: Final answer
   x = 5,108.80