Finding the Fourth Proportional to 12,359.52, 18,492.72 and 8,668.92

Step by Step Solution

1. Step 1: Write the proportion equation
   12,359.52 : 18,492.72 = 8,668.92 : x
2. Step 2: Convert to fraction form
   12,359.52/18,492.72 = 8,668.92/x
3. Step 3: Cross multiply
   12,359.52x = 18,492.72 × 8,668.92
4. Step 4: Simplify right side
   12,359.52x = 160,311,910.26
5. Step 5: Solve for x
   x = 160,311,910.26/12,359.52
6. Step 6: Final answer
   x = 12,970.72