Finding the Fourth Proportional to 13,763.56, 20,645.43 and 3,375.31

Step by Step Solution

1. Step 1: Write the proportion equation
   13,763.56 : 20,645.43 = 3,375.31 : x
2. Step 2: Convert to fraction form
   13,763.56/20,645.43 = 3,375.31/x
3. Step 3: Cross multiply
   13,763.56x = 20,645.43 × 3,375.31
4. Step 4: Simplify right side
   13,763.56x = 69,684,726.33
5. Step 5: Solve for x
   x = 69,684,726.33/13,763.56
6. Step 6: Final answer
   x = 5,062.99