Finding the Fourth Proportional to 12,897.34, 17,793 and 8,419.48

Step by Step Solution

1. Step 1: Write the proportion equation
   12,897.34 : 17,793 = 8,419.48 : x
2. Step 2: Convert to fraction form
   12,897.34/17,793 = 8,419.48/x
3. Step 3: Cross multiply
   12,897.34x = 17,793 × 8,419.48
4. Step 4: Simplify right side
   12,897.34x = 149,807,807.64
5. Step 5: Solve for x
   x = 149,807,807.64/12,897.34
6. Step 6: Final answer
   x = 11,615.40