Finding the Fourth Proportional to 21,681.91, 32,527.46 and 7,641.37

Step by Step Solution

1. Step 1: Write the proportion equation
   21,681.91 : 32,527.46 = 7,641.37 : x
2. Step 2: Convert to fraction form
   21,681.91/32,527.46 = 7,641.37/x
3. Step 3: Cross multiply
   21,681.91x = 32,527.46 × 7,641.37
4. Step 4: Simplify right side
   21,681.91x = 248,554,357.02
5. Step 5: Solve for x
   x = 248,554,357.02/21,681.91
6. Step 6: Final answer
   x = 11,463.67