Finding the Fourth Proportional to 12,492.09, 18,736.20 and 5,470.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,492.09 : 18,736.20 = 5,470.56 : x
2. Step 2: Convert to fraction form
   12,492.09/18,736.20 = 5,470.56/x
3. Step 3: Cross multiply
   12,492.09x = 18,736.20 × 5,470.56
4. Step 4: Simplify right side
   12,492.09x = 102,497,506.27
5. Step 5: Solve for x
   x = 102,497,506.27/12,492.09
6. Step 6: Final answer
   x = 8,204.99