Finding the Fourth Proportional to 12,607.69, 18,913.58 and 3,723.92

Step by Step Solution

1. Step 1: Write the proportion equation
   12,607.69 : 18,913.58 = 3,723.92 : x
2. Step 2: Convert to fraction form
   12,607.69/18,913.58 = 3,723.92/x
3. Step 3: Cross multiply
   12,607.69x = 18,913.58 × 3,723.92
4. Step 4: Simplify right side
   12,607.69x = 70,432,559.61
5. Step 5: Solve for x
   x = 70,432,559.61/12,607.69
6. Step 6: Final answer
   x = 5,586.48