Finding the Fourth Proportional to 21,872.69, 32,814.24 and 7,081.61

Step by Step Solution

1. Step 1: Write the proportion equation
   21,872.69 : 32,814.24 = 7,081.61 : x
2. Step 2: Convert to fraction form
   21,872.69/32,814.24 = 7,081.61/x
3. Step 3: Cross multiply
   21,872.69x = 32,814.24 × 7,081.61
4. Step 4: Simplify right side
   21,872.69x = 232,377,486.06
5. Step 5: Solve for x
   x = 232,377,486.06/21,872.69
6. Step 6: Final answer
   x = 10,624.10