Finding the Fourth Proportional to 11,601.98, 17,388.40 and 8,321.48

Step by Step Solution

1. Step 1: Write the proportion equation
   11,601.98 : 17,388.40 = 8,321.48 : x
2. Step 2: Convert to fraction form
   11,601.98/17,388.40 = 8,321.48/x
3. Step 3: Cross multiply
   11,601.98x = 17,388.40 × 8,321.48
4. Step 4: Simplify right side
   11,601.98x = 144,697,222.83
5. Step 5: Solve for x
   x = 144,697,222.83/11,601.98
6. Step 6: Final answer
   x = 12,471.77