Finding the Fourth Proportional to 21,847.01, 30,158.31 and 13,787.91

Step by Step Solution

1. Step 1: Write the proportion equation
   21,847.01 : 30,158.31 = 13,787.91 : x
2. Step 2: Convert to fraction form
   21,847.01/30,158.31 = 13,787.91/x
3. Step 3: Cross multiply
   21,847.01x = 30,158.31 × 13,787.91
4. Step 4: Simplify right side
   21,847.01x = 415,820,064.03
5. Step 5: Solve for x
   x = 415,820,064.03/21,847.01
6. Step 6: Final answer
   x = 19,033.28