Finding the Fourth Proportional to 21,282.48, 29,367 and 12,330.16

Step by Step Solution

1. Step 1: Write the proportion equation
   21,282.48 : 29,367 = 12,330.16 : x
2. Step 2: Convert to fraction form
   21,282.48/29,367 = 12,330.16/x
3. Step 3: Cross multiply
   21,282.48x = 29,367 × 12,330.16
4. Step 4: Simplify right side
   21,282.48x = 362,099,808.72
5. Step 5: Solve for x
   x = 362,099,808.72/21,282.48
6. Step 6: Final answer
   x = 17,013.99