Finding the Fourth Proportional to 12,300.37, 18,446.00 and 3,978.23

Step by Step Solution

1. Step 1: Write the proportion equation
   12,300.37 : 18,446.00 = 3,978.23 : x
2. Step 2: Convert to fraction form
   12,300.37/18,446.00 = 3,978.23/x
3. Step 3: Cross multiply
   12,300.37x = 18,446.00 × 3,978.23
4. Step 4: Simplify right side
   12,300.37x = 73,382,318.46
5. Step 5: Solve for x
   x = 73,382,318.46/12,300.37
6. Step 6: Final answer
   x = 5,965.86