Finding the Fourth Proportional to 21,300.09, 29,392.32 and 12,348.09

Step by Step Solution

1. Step 1: Write the proportion equation
   21,300.09 : 29,392.32 = 12,348.09 : x
2. Step 2: Convert to fraction form
   21,300.09/29,392.32 = 12,348.09/x
3. Step 3: Cross multiply
   21,300.09x = 29,392.32 × 12,348.09
4. Step 4: Simplify right side
   21,300.09x = 362,939,012.67
5. Step 5: Solve for x
   x = 362,939,012.67/21,300.09
6. Step 6: Final answer
   x = 17,039.32