Finding the Fourth Proportional to 13,730.54, 18,947.41 and 7,761.85

Step by Step Solution

1. Step 1: Write the proportion equation
   13,730.54 : 18,947.41 = 7,761.85 : x
2. Step 2: Convert to fraction form
   13,730.54/18,947.41 = 7,761.85/x
3. Step 3: Cross multiply
   13,730.54x = 18,947.41 × 7,761.85
4. Step 4: Simplify right side
   13,730.54x = 147,066,958.59
5. Step 5: Solve for x
   x = 147,066,958.59/13,730.54
6. Step 6: Final answer
   x = 10,710.94