Finding the Fourth Proportional to 13,086.56, 19,626.86 and 3,726.38

Step by Step Solution

1. Step 1: Write the proportion equation
   13,086.56 : 19,626.86 = 3,726.38 : x
2. Step 2: Convert to fraction form
   13,086.56/19,626.86 = 3,726.38/x
3. Step 3: Cross multiply
   13,086.56x = 19,626.86 × 3,726.38
4. Step 4: Simplify right side
   13,086.56x = 73,137,049.75
5. Step 5: Solve for x
   x = 73,137,049.75/13,086.56
6. Step 6: Final answer
   x = 5,588.72