Finding the Fourth Proportional to 12,783.98, 19,180.75 and 5,761.89

Step by Step Solution

1. Step 1: Write the proportion equation
   12,783.98 : 19,180.75 = 5,761.89 : x
2. Step 2: Convert to fraction form
   12,783.98/19,180.75 = 5,761.89/x
3. Step 3: Cross multiply
   12,783.98x = 19,180.75 × 5,761.89
4. Step 4: Simplify right side
   12,783.98x = 110,517,371.62
5. Step 5: Solve for x
   x = 110,517,371.62/12,783.98
6. Step 6: Final answer
   x = 8,644.99