Finding the Fourth Proportional to 21,767.85, 30,039.71 and 12,337.05

Step by Step Solution

1. Step 1: Write the proportion equation
   21,767.85 : 30,039.71 = 12,337.05 : x
2. Step 2: Convert to fraction form
   21,767.85/30,039.71 = 12,337.05/x
3. Step 3: Cross multiply
   21,767.85x = 30,039.71 × 12,337.05
4. Step 4: Simplify right side
   21,767.85x = 370,601,404.26
5. Step 5: Solve for x
   x = 370,601,404.26/21,767.85
6. Step 6: Final answer
   x = 17,025.17