Finding the Fourth Proportional to 12,601, 17,385.76 and 8,127.36

Step by Step Solution

1. Step 1: Write the proportion equation
   12,601 : 17,385.76 = 8,127.36 : x
2. Step 2: Convert to fraction form
   12,601/17,385.76 = 8,127.36/x
3. Step 3: Cross multiply
   12,601x = 17,385.76 × 8,127.36
4. Step 4: Simplify right side
   12,601x = 141,300,330.39
5. Step 5: Solve for x
   x = 141,300,330.39/12,601
6. Step 6: Final answer
   x = 11,213.42