Finding the Fourth Proportional to 12,967.54, 17,897.88 and 8,435.89

Step by Step Solution

1. Step 1: Write the proportion equation
   12,967.54 : 17,897.88 = 8,435.89 : x
2. Step 2: Convert to fraction form
   12,967.54/17,897.88 = 8,435.89/x
3. Step 3: Cross multiply
   12,967.54x = 17,897.88 × 8,435.89
4. Step 4: Simplify right side
   12,967.54x = 150,984,546.91
5. Step 5: Solve for x
   x = 150,984,546.91/12,967.54
6. Step 6: Final answer
   x = 11,643.27