Finding the Fourth Proportional to 13,086.57, 19,629.97 and 3,726.58

Step by Step Solution

1. Step 1: Write the proportion equation
   13,086.57 : 19,629.97 = 3,726.58 : x
2. Step 2: Convert to fraction form
   13,086.57/19,629.97 = 3,726.58/x
3. Step 3: Cross multiply
   13,086.57x = 19,629.97 × 3,726.58
4. Step 4: Simplify right side
   13,086.57x = 73,152,632.02
5. Step 5: Solve for x
   x = 73,152,632.02/13,086.57
6. Step 6: Final answer
   x = 5,589.90