Finding the Fourth Proportional to 13,040.80, 19,559.16 and 3,681.52

Step by Step Solution

1. Step 1: Write the proportion equation
   13,040.80 : 19,559.16 = 3,681.52 : x
2. Step 2: Convert to fraction form
   13,040.80/19,559.16 = 3,681.52/x
3. Step 3: Cross multiply
   13,040.80x = 19,559.16 × 3,681.52
4. Step 4: Simplify right side
   13,040.80x = 72,007,438.72
5. Step 5: Solve for x
   x = 72,007,438.72/13,040.80
6. Step 6: Final answer
   x = 5,521.70