Finding the Fourth Proportional to 18,737.49, 25,861.32 and 12,031.59

Step by Step Solution

1. Step 1: Write the proportion equation
   18,737.49 : 25,861.32 = 12,031.59 : x
2. Step 2: Convert to fraction form
   18,737.49/25,861.32 = 12,031.59/x
3. Step 3: Cross multiply
   18,737.49x = 25,861.32 × 12,031.59
4. Step 4: Simplify right side
   18,737.49x = 311,152,799.10
5. Step 5: Solve for x
   x = 311,152,799.10/18,737.49
6. Step 6: Final answer
   x = 16,605.90