Finding the Fourth Proportional to 12,440.34, 17,149.77 and 8,897.40

Step by Step Solution

1. Step 1: Write the proportion equation
   12,440.34 : 17,149.77 = 8,897.40 : x
2. Step 2: Convert to fraction form
   12,440.34/17,149.77 = 8,897.40/x
3. Step 3: Cross multiply
   12,440.34x = 17,149.77 × 8,897.40
4. Step 4: Simplify right side
   12,440.34x = 152,588,363.60
5. Step 5: Solve for x
   x = 152,588,363.60/12,440.34
6. Step 6: Final answer
   x = 12,265.61