Finding the Fourth Proportional to 21,282.88, 29,366.72 and 12,331.52

Step by Step Solution

1. Step 1: Write the proportion equation
   21,282.88 : 29,366.72 = 12,331.52 : x
2. Step 2: Convert to fraction form
   21,282.88/29,366.72 = 12,331.52/x
3. Step 3: Cross multiply
   21,282.88x = 29,366.72 × 12,331.52
4. Step 4: Simplify right side
   21,282.88x = 362,136,295.01
5. Step 5: Solve for x
   x = 362,136,295.01/21,282.88
6. Step 6: Final answer
   x = 17,015.38