Finding the Fourth Proportional to 12,018.90, 16,595.34 and 9,361.71

Step by Step Solution

1. Step 1: Write the proportion equation
   12,018.90 : 16,595.34 = 9,361.71 : x
2. Step 2: Convert to fraction form
   12,018.90/16,595.34 = 9,361.71/x
3. Step 3: Cross multiply
   12,018.90x = 16,595.34 × 9,361.71
4. Step 4: Simplify right side
   12,018.90x = 155,360,760.43
5. Step 5: Solve for x
   x = 155,360,760.43/12,018.90
6. Step 6: Final answer
   x = 12,926.37