Finding the Fourth Proportional to 12,004.28, 18,009.47 and 3,684.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,004.28 : 18,009.47 = 3,684.72 : x
2. Step 2: Convert to fraction form
   12,004.28/18,009.47 = 3,684.72/x
3. Step 3: Cross multiply
   12,004.28x = 18,009.47 × 3,684.72
4. Step 4: Simplify right side
   12,004.28x = 66,359,835.87
5. Step 5: Solve for x
   x = 66,359,835.87/12,004.28
6. Step 6: Final answer
   x = 5,528.01