Finding the Fourth Proportional to 13,013.64, 19,518.98 and 3,654.42

Step by Step Solution

1. Step 1: Write the proportion equation
   13,013.64 : 19,518.98 = 3,654.42 : x
2. Step 2: Convert to fraction form
   13,013.64/19,518.98 = 3,654.42/x
3. Step 3: Cross multiply
   13,013.64x = 19,518.98 × 3,654.42
4. Step 4: Simplify right side
   13,013.64x = 71,330,550.89
5. Step 5: Solve for x
   x = 71,330,550.89/13,013.64
6. Step 6: Final answer
   x = 5,481.21