Finding the Fourth Proportional to 32,936.78, 49,411.20 and 13,217.30

Step by Step Solution

1. Step 1: Write the proportion equation
   32,936.78 : 49,411.20 = 13,217.30 : x
2. Step 2: Convert to fraction form
   32,936.78/49,411.20 = 13,217.30/x
3. Step 3: Cross multiply
   32,936.78x = 49,411.20 × 13,217.30
4. Step 4: Simplify right side
   32,936.78x = 653,082,653.76
5. Step 5: Solve for x
   x = 653,082,653.76/32,936.78
6. Step 6: Final answer
   x = 19,828.37