Finding the Fourth Proportional to 13,454.85, 18,567.41 and 7,789.83

Step by Step Solution

1. Step 1: Write the proportion equation
   13,454.85 : 18,567.41 = 7,789.83 : x
2. Step 2: Convert to fraction form
   13,454.85/18,567.41 = 7,789.83/x
3. Step 3: Cross multiply
   13,454.85x = 18,567.41 × 7,789.83
4. Step 4: Simplify right side
   13,454.85x = 144,636,928.49
5. Step 5: Solve for x
   x = 144,636,928.49/13,454.85
6. Step 6: Final answer
   x = 10,749.80