Finding the Fourth Proportional to 16,005.45, 22,087.53 and 8,931.87

Step by Step Solution

1. Step 1: Write the proportion equation
   16,005.45 : 22,087.53 = 8,931.87 : x
2. Step 2: Convert to fraction form
   16,005.45/22,087.53 = 8,931.87/x
3. Step 3: Cross multiply
   16,005.45x = 22,087.53 × 8,931.87
4. Step 4: Simplify right side
   16,005.45x = 197,282,946.58
5. Step 5: Solve for x
   x = 197,282,946.58/16,005.45
6. Step 6: Final answer
   x = 12,325.98