Finding the Fourth Proportional to 8,492.28, 12,739.23 and 3,298.56

Step by Step Solution

1. Step 1: Write the proportion equation
   8,492.28 : 12,739.23 = 3,298.56 : x
2. Step 2: Convert to fraction form
   8,492.28/12,739.23 = 3,298.56/x
3. Step 3: Cross multiply
   8,492.28x = 12,739.23 × 3,298.56
4. Step 4: Simplify right side
   8,492.28x = 42,021,114.51
5. Step 5: Solve for x
   x = 42,021,114.51/8,492.28
6. Step 6: Final answer
   x = 4,948.15