Finding the Fourth Proportional to 19,123.27, 28,660.56 and 10,807.92

Step by Step Solution

1. Step 1: Write the proportion equation
   19,123.27 : 28,660.56 = 10,807.92 : x
2. Step 2: Convert to fraction form
   19,123.27/28,660.56 = 10,807.92/x
3. Step 3: Cross multiply
   19,123.27x = 28,660.56 × 10,807.92
4. Step 4: Simplify right side
   19,123.27x = 309,761,039.64
5. Step 5: Solve for x
   x = 309,761,039.64/19,123.27
6. Step 6: Final answer
   x = 16,198.13