Finding the Fourth Proportional to 13,527.33, 18,658.32 and 12,411.96

Step by Step Solution

1. Step 1: Write the proportion equation
   13,527.33 : 18,658.32 = 12,411.96 : x
2. Step 2: Convert to fraction form
   13,527.33/18,658.32 = 12,411.96/x
3. Step 3: Cross multiply
   13,527.33x = 18,658.32 × 12,411.96
4. Step 4: Simplify right side
   13,527.33x = 231,586,321.51
5. Step 5: Solve for x
   x = 231,586,321.51/13,527.33
6. Step 6: Final answer
   x = 17,119.88