Finding the Fourth Proportional to 13,013.52, 19,521.59 and 3,653.56

Step by Step Solution

1. Step 1: Write the proportion equation
   13,013.52 : 19,521.59 = 3,653.56 : x
2. Step 2: Convert to fraction form
   13,013.52/19,521.59 = 3,653.56/x
3. Step 3: Cross multiply
   13,013.52x = 19,521.59 × 3,653.56
4. Step 4: Simplify right side
   13,013.52x = 71,323,300.36
5. Step 5: Solve for x
   x = 71,323,300.36/13,013.52
6. Step 6: Final answer
   x = 5,480.71