Finding the Fourth Proportional to 16,485.21, 22,749.59 and 8,931.59

Step by Step Solution

1. Step 1: Write the proportion equation
   16,485.21 : 22,749.59 = 8,931.59 : x
2. Step 2: Convert to fraction form
   16,485.21/22,749.59 = 8,931.59/x
3. Step 3: Cross multiply
   16,485.21x = 22,749.59 × 8,931.59
4. Step 4: Simplify right side
   16,485.21x = 203,190,089.75
5. Step 5: Solve for x
   x = 203,190,089.75/16,485.21
6. Step 6: Final answer
   x = 12,325.60