Finding the Fourth Proportional to 12,453.30, 18,674.52 and 3,688.86

Step by Step Solution

1. Step 1: Write the proportion equation
   12,453.30 : 18,674.52 = 3,688.86 : x
2. Step 2: Convert to fraction form
   12,453.30/18,674.52 = 3,688.86/x
3. Step 3: Cross multiply
   12,453.30x = 18,674.52 × 3,688.86
4. Step 4: Simplify right side
   12,453.30x = 68,887,689.85
5. Step 5: Solve for x
   x = 68,887,689.85/12,453.30
6. Step 6: Final answer
   x = 5,531.68