Finding the Fourth Proportional to 21,627.31, 29,846.87 and 12,069.31

Step by Step Solution

1. Step 1: Write the proportion equation
   21,627.31 : 29,846.87 = 12,069.31 : x
2. Step 2: Convert to fraction form
   21,627.31/29,846.87 = 12,069.31/x
3. Step 3: Cross multiply
   21,627.31x = 29,846.87 × 12,069.31
4. Step 4: Simplify right side
   21,627.31x = 360,231,126.56
5. Step 5: Solve for x
   x = 360,231,126.56/21,627.31
6. Step 6: Final answer
   x = 16,656.31