Finding the Fourth Proportional to 9,105.35, 13,654.73 and 3,180.57

Step by Step Solution

1. Step 1: Write the proportion equation
   9,105.35 : 13,654.73 = 3,180.57 : x
2. Step 2: Convert to fraction form
   9,105.35/13,654.73 = 3,180.57/x
3. Step 3: Cross multiply
   9,105.35x = 13,654.73 × 3,180.57
4. Step 4: Simplify right side
   9,105.35x = 43,429,840.26
5. Step 5: Solve for x
   x = 43,429,840.26/9,105.35
6. Step 6: Final answer
   x = 4,769.71