Finding the Fourth Proportional to 21,787.02, 30,065.71 and 12,227.13

Step by Step Solution

1. Step 1: Write the proportion equation
   21,787.02 : 30,065.71 = 12,227.13 : x
2. Step 2: Convert to fraction form
   21,787.02/30,065.71 = 12,227.13/x
3. Step 3: Cross multiply
   21,787.02x = 30,065.71 × 12,227.13
4. Step 4: Simplify right side
   21,787.02x = 367,617,344.71
5. Step 5: Solve for x
   x = 367,617,344.71/21,787.02
6. Step 6: Final answer
   x = 16,873.23