Finding the Fourth Proportional to 12,073.50, 18,111.87 and 5,149.62

Step by Step Solution

1. Step 1: Write the proportion equation
   12,073.50 : 18,111.87 = 5,149.62 : x
2. Step 2: Convert to fraction form
   12,073.50/18,111.87 = 5,149.62/x
3. Step 3: Cross multiply
   12,073.50x = 18,111.87 × 5,149.62
4. Step 4: Simplify right side
   12,073.50x = 93,269,247.99
5. Step 5: Solve for x
   x = 93,269,247.99/12,073.50
6. Step 6: Final answer
   x = 7,725.12