Finding the Fourth Proportional to 12,490.41, 18,738.45 and 3,724.59

Step by Step Solution

1. Step 1: Write the proportion equation
   12,490.41 : 18,738.45 = 3,724.59 : x
2. Step 2: Convert to fraction form
   12,490.41/18,738.45 = 3,724.59/x
3. Step 3: Cross multiply
   12,490.41x = 18,738.45 × 3,724.59
4. Step 4: Simplify right side
   12,490.41x = 69,793,043.49
5. Step 5: Solve for x
   x = 69,793,043.49/12,490.41
6. Step 6: Final answer
   x = 5,587.73