Finding the Fourth Proportional to 12,887.45, 17,793.25 and 9,897.94

Step by Step Solution

1. Step 1: Write the proportion equation
   12,887.45 : 17,793.25 = 9,897.94 : x
2. Step 2: Convert to fraction form
   12,887.45/17,793.25 = 9,897.94/x
3. Step 3: Cross multiply
   12,887.45x = 17,793.25 × 9,897.94
4. Step 4: Simplify right side
   12,887.45x = 176,116,520.91
5. Step 5: Solve for x
   x = 176,116,520.91/12,887.45
6. Step 6: Final answer
   x = 13,665.74