Finding the Fourth Proportional to 19,298.83, 28,974.41 and 13,361.47

Step by Step Solution

1. Step 1: Write the proportion equation
   19,298.83 : 28,974.41 = 13,361.47 : x
2. Step 2: Convert to fraction form
   19,298.83/28,974.41 = 13,361.47/x
3. Step 3: Cross multiply
   19,298.83x = 28,974.41 × 13,361.47
4. Step 4: Simplify right side
   19,298.83x = 387,140,709.98
5. Step 5: Solve for x
   x = 387,140,709.98/19,298.83
6. Step 6: Final answer
   x = 20,060.32