Finding the Fourth Proportional to 11,766.72, 17,718.96 and 8,502.40

Step by Step Solution

1. Step 1: Write the proportion equation
   11,766.72 : 17,718.96 = 8,502.40 : x
2. Step 2: Convert to fraction form
   11,766.72/17,718.96 = 8,502.40/x
3. Step 3: Cross multiply
   11,766.72x = 17,718.96 × 8,502.40
4. Step 4: Simplify right side
   11,766.72x = 150,653,685.50
5. Step 5: Solve for x
   x = 150,653,685.50/11,766.72
6. Step 6: Final answer
   x = 12,803.37