Finding the Fourth Proportional to 19,790.36, 29,685.50 and 8,103.59

Step by Step Solution

1. Step 1: Write the proportion equation
   19,790.36 : 29,685.50 = 8,103.59 : x
2. Step 2: Convert to fraction form
   19,790.36/29,685.50 = 8,103.59/x
3. Step 3: Cross multiply
   19,790.36x = 29,685.50 × 8,103.59
4. Step 4: Simplify right side
   19,790.36x = 240,559,080.43
5. Step 5: Solve for x
   x = 240,559,080.43/19,790.36
6. Step 6: Final answer
   x = 12,155.37