Finding the Fourth Proportional to 20,687.34, 31,003.61 and 7,527.07

Step by Step Solution

1. Step 1: Write the proportion equation
   20,687.34 : 31,003.61 = 7,527.07 : x
2. Step 2: Convert to fraction form
   20,687.34/31,003.61 = 7,527.07/x
3. Step 3: Cross multiply
   20,687.34x = 31,003.61 × 7,527.07
4. Step 4: Simplify right side
   20,687.34x = 233,366,227.58
5. Step 5: Solve for x
   x = 233,366,227.58/20,687.34
6. Step 6: Final answer
   x = 11,280.63