Finding the Fourth Proportional to 12,288.14, 18,434.37 and 3,969.98

Step by Step Solution

1. Step 1: Write the proportion equation
   12,288.14 : 18,434.37 = 3,969.98 : x
2. Step 2: Convert to fraction form
   12,288.14/18,434.37 = 3,969.98/x
3. Step 3: Cross multiply
   12,288.14x = 18,434.37 × 3,969.98
4. Step 4: Simplify right side
   12,288.14x = 73,184,080.21
5. Step 5: Solve for x
   x = 73,184,080.21/12,288.14
6. Step 6: Final answer
   x = 5,955.67