Finding the Fourth Proportional to 19,046.86, 28,574.85 and 7,947.39

Step by Step Solution

1. Step 1: Write the proportion equation
   19,046.86 : 28,574.85 = 7,947.39 : x
2. Step 2: Convert to fraction form
   19,046.86/28,574.85 = 7,947.39/x
3. Step 3: Cross multiply
   19,046.86x = 28,574.85 × 7,947.39
4. Step 4: Simplify right side
   19,046.86x = 227,095,477.14
5. Step 5: Solve for x
   x = 227,095,477.14/19,046.86
6. Step 6: Final answer
   x = 11,922.99