Finding the Fourth Proportional to 21,380.13, 32,050.69 and 8,242.29

Step by Step Solution

1. Step 1: Write the proportion equation
   21,380.13 : 32,050.69 = 8,242.29 : x
2. Step 2: Convert to fraction form
   21,380.13/32,050.69 = 8,242.29/x
3. Step 3: Cross multiply
   21,380.13x = 32,050.69 × 8,242.29
4. Step 4: Simplify right side
   21,380.13x = 264,171,081.68
5. Step 5: Solve for x
   x = 264,171,081.68/21,380.13
6. Step 6: Final answer
   x = 12,355.92