Finding the Fourth Proportional to 12,451.98, 18,680.71 and 3,687.58

Step by Step Solution

1. Step 1: Write the proportion equation
   12,451.98 : 18,680.71 = 3,687.58 : x
2. Step 2: Convert to fraction form
   12,451.98/18,680.71 = 3,687.58/x
3. Step 3: Cross multiply
   12,451.98x = 18,680.71 × 3,687.58
4. Step 4: Simplify right side
   12,451.98x = 68,886,612.58
5. Step 5: Solve for x
   x = 68,886,612.58/12,451.98
6. Step 6: Final answer
   x = 5,532.18