Finding the Fourth Proportional to 21,268.75, 31,900.69 and 5,687.59

Step by Step Solution

1. Step 1: Write the proportion equation
   21,268.75 : 31,900.69 = 5,687.59 : x
2. Step 2: Convert to fraction form
   21,268.75/31,900.69 = 5,687.59/x
3. Step 3: Cross multiply
   21,268.75x = 31,900.69 × 5,687.59
4. Step 4: Simplify right side
   21,268.75x = 181,438,059.66
5. Step 5: Solve for x
   x = 181,438,059.66/21,268.75
6. Step 6: Final answer
   x = 8,530.73