Finding the Fourth Proportional to 20,689.49, 31,034.18 and 7,536.48

Step by Step Solution

1. Step 1: Write the proportion equation
   20,689.49 : 31,034.18 = 7,536.48 : x
2. Step 2: Convert to fraction form
   20,689.49/31,034.18 = 7,536.48/x
3. Step 3: Cross multiply
   20,689.49x = 31,034.18 × 7,536.48
4. Step 4: Simplify right side
   20,689.49x = 233,888,476.89
5. Step 5: Solve for x
   x = 233,888,476.89/20,689.49
6. Step 6: Final answer
   x = 11,304.70