Finding the Fourth Proportional to 12,151.89, 18,207.31 and 7,462.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,151.89 : 18,207.31 = 7,462.12 : x
2. Step 2: Convert to fraction form
   12,151.89/18,207.31 = 7,462.12/x
3. Step 3: Cross multiply
   12,151.89x = 18,207.31 × 7,462.12
4. Step 4: Simplify right side
   12,151.89x = 135,865,132.10
5. Step 5: Solve for x
   x = 135,865,132.10/12,151.89
6. Step 6: Final answer
   x = 11,180.58