Finding the Fourth Proportional to 13,012.76, 19,518.44 and 3,653.42

Step by Step Solution

1. Step 1: Write the proportion equation
   13,012.76 : 19,518.44 = 3,653.42 : x
2. Step 2: Convert to fraction form
   13,012.76/19,518.44 = 3,653.42/x
3. Step 3: Cross multiply
   13,012.76x = 19,518.44 × 3,653.42
4. Step 4: Simplify right side
   13,012.76x = 71,309,059.06
5. Step 5: Solve for x
   x = 71,309,059.06/13,012.76
6. Step 6: Final answer
   x = 5,479.93