Finding the Fourth Proportional to 19,983.38, 29,978.72 and 8,297.51

Step by Step Solution

1. Step 1: Write the proportion equation
   19,983.38 : 29,978.72 = 8,297.51 : x
2. Step 2: Convert to fraction form
   19,983.38/29,978.72 = 8,297.51/x
3. Step 3: Cross multiply
   19,983.38x = 29,978.72 × 8,297.51
4. Step 4: Simplify right side
   19,983.38x = 248,748,687.50
5. Step 5: Solve for x
   x = 248,748,687.50/19,983.38
6. Step 6: Final answer
   x = 12,447.78