Finding the Fourth Proportional to 20,859.09, 31,288.37 and 5,064.25

Step by Step Solution

1. Step 1: Write the proportion equation
   20,859.09 : 31,288.37 = 5,064.25 : x
2. Step 2: Convert to fraction form
   20,859.09/31,288.37 = 5,064.25/x
3. Step 3: Cross multiply
   20,859.09x = 31,288.37 × 5,064.25
4. Step 4: Simplify right side
   20,859.09x = 158,452,127.77
5. Step 5: Solve for x
   x = 158,452,127.77/20,859.09
6. Step 6: Final answer
   x = 7,596.31