Finding the Fourth Proportional to 21,327.72, 29,422.71 and 12,370.03

Step by Step Solution

1. Step 1: Write the proportion equation
   21,327.72 : 29,422.71 = 12,370.03 : x
2. Step 2: Convert to fraction form
   21,327.72/29,422.71 = 12,370.03/x
3. Step 3: Cross multiply
   21,327.72x = 29,422.71 × 12,370.03
4. Step 4: Simplify right side
   21,327.72x = 363,959,805.38
5. Step 5: Solve for x
   x = 363,959,805.38/21,327.72
6. Step 6: Final answer
   x = 17,065.11