Finding the Fourth Proportional to 12,111.46, 18,147.99 and 9,344.91

Step by Step Solution

1. Step 1: Write the proportion equation
   12,111.46 : 18,147.99 = 9,344.91 : x
2. Step 2: Convert to fraction form
   12,111.46/18,147.99 = 9,344.91/x
3. Step 3: Cross multiply
   12,111.46x = 18,147.99 × 9,344.91
4. Step 4: Simplify right side
   12,111.46x = 169,591,333.23
5. Step 5: Solve for x
   x = 169,591,333.23/12,111.46
6. Step 6: Final answer
   x = 14,002.55