Finding the Fourth Proportional to 13,772.82, 19,007.61 and 7,805.97

Step by Step Solution

1. Step 1: Write the proportion equation
   13,772.82 : 19,007.61 = 7,805.97 : x
2. Step 2: Convert to fraction form
   13,772.82/19,007.61 = 7,805.97/x
3. Step 3: Cross multiply
   13,772.82x = 19,007.61 × 7,805.97
4. Step 4: Simplify right side
   13,772.82x = 148,372,833.43
5. Step 5: Solve for x
   x = 148,372,833.43/13,772.82
6. Step 6: Final answer
   x = 10,772.87