Finding the Fourth Proportional to 12,432.42, 17,133.12 and 8,889.48

Step by Step Solution

1. Step 1: Write the proportion equation
   12,432.42 : 17,133.12 = 8,889.48 : x
2. Step 2: Convert to fraction form
   12,432.42/17,133.12 = 8,889.48/x
3. Step 3: Cross multiply
   12,432.42x = 17,133.12 × 8,889.48
4. Step 4: Simplify right side
   12,432.42x = 152,304,527.58
5. Step 5: Solve for x
   x = 152,304,527.58/12,432.42
6. Step 6: Final answer
   x = 12,250.59