Finding the Fourth Proportional to 15,681, 21,657.74 and 10,327.37

Step by Step Solution

1. Step 1: Write the proportion equation
   15,681 : 21,657.74 = 10,327.37 : x
2. Step 2: Convert to fraction form
   15,681/21,657.74 = 10,327.37/x
3. Step 3: Cross multiply
   15,681x = 21,657.74 × 10,327.37
4. Step 4: Simplify right side
   15,681x = 223,667,334.42
5. Step 5: Solve for x
   x = 223,667,334.42/15,681
6. Step 6: Final answer
   x = 14,263.59