Finding the Fourth Proportional to 21,063.50, 29,064.17 and 12,448.48

Step by Step Solution

1. Step 1: Write the proportion equation
   21,063.50 : 29,064.17 = 12,448.48 : x
2. Step 2: Convert to fraction form
   21,063.50/29,064.17 = 12,448.48/x
3. Step 3: Cross multiply
   21,063.50x = 29,064.17 × 12,448.48
4. Step 4: Simplify right side
   21,063.50x = 361,804,697.42
5. Step 5: Solve for x
   x = 361,804,697.42/21,063.50
6. Step 6: Final answer
   x = 17,176.86