Finding the Fourth Proportional to 16,764.96, 25,099.92 and 13,931.04

Step by Step Solution

1. Step 1: Write the proportion equation
   16,764.96 : 25,099.92 = 13,931.04 : x
2. Step 2: Convert to fraction form
   16,764.96/25,099.92 = 13,931.04/x
3. Step 3: Cross multiply
   16,764.96x = 25,099.92 × 13,931.04
4. Step 4: Simplify right side
   16,764.96x = 349,667,989.52
5. Step 5: Solve for x
   x = 349,667,989.52/16,764.96
6. Step 6: Final answer
   x = 20,857.07