Finding the Fourth Proportional to 12,897.04, 17,682 and 12,663.76

Step by Step Solution

1. Step 1: Write the proportion equation
   12,897.04 : 17,682 = 12,663.76 : x
2. Step 2: Convert to fraction form
   12,897.04/17,682 = 12,663.76/x
3. Step 3: Cross multiply
   12,897.04x = 17,682 × 12,663.76
4. Step 4: Simplify right side
   12,897.04x = 223,920,604.32
5. Step 5: Solve for x
   x = 223,920,604.32/12,897.04
6. Step 6: Final answer
   x = 17,362.17