Finding the Fourth Proportional to 12,039.89, 18,056.59 and 4,247.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,039.89 : 18,056.59 = 4,247.69 : x
2. Step 2: Convert to fraction form
   12,039.89/18,056.59 = 4,247.69/x
3. Step 3: Cross multiply
   12,039.89x = 18,056.59 × 4,247.69
4. Step 4: Simplify right side
   12,039.89x = 76,698,695.87
5. Step 5: Solve for x
   x = 76,698,695.87/12,039.89
6. Step 6: Final answer
   x = 6,370.38