Finding the Fourth Proportional to 8,661.72, 12,994.20 and 3,468

Step by Step Solution

1. Step 1: Write the proportion equation
   8,661.72 : 12,994.20 = 3,468 : x
2. Step 2: Convert to fraction form
   8,661.72/12,994.20 = 3,468/x
3. Step 3: Cross multiply
   8,661.72x = 12,994.20 × 3,468
4. Step 4: Simplify right side
   8,661.72x = 45,063,885.60
5. Step 5: Solve for x
   x = 45,063,885.60/8,661.72
6. Step 6: Final answer
   x = 5,202.65