Finding the Fourth Proportional to 12,007.89, 18,014.46 and 3,688.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,007.89 : 18,014.46 = 3,688.50 : x
2. Step 2: Convert to fraction form
   12,007.89/18,014.46 = 3,688.50/x
3. Step 3: Cross multiply
   12,007.89x = 18,014.46 × 3,688.50
4. Step 4: Simplify right side
   12,007.89x = 66,446,335.71
5. Step 5: Solve for x
   x = 66,446,335.71/12,007.89
6. Step 6: Final answer
   x = 5,533.56