Finding the Fourth Proportional to 15,662.79, 21,614.27 and 8,492.31

Step by Step Solution

1. Step 1: Write the proportion equation
   15,662.79 : 21,614.27 = 8,492.31 : x
2. Step 2: Convert to fraction form
   15,662.79/21,614.27 = 8,492.31/x
3. Step 3: Cross multiply
   15,662.79x = 21,614.27 × 8,492.31
4. Step 4: Simplify right side
   15,662.79x = 183,555,038.80
5. Step 5: Solve for x
   x = 183,555,038.80/15,662.79
6. Step 6: Final answer
   x = 11,719.18