Finding the Fourth Proportional to 21,407.69, 32,111.30 and 8,250.83

Step by Step Solution

1. Step 1: Write the proportion equation
   21,407.69 : 32,111.30 = 8,250.83 : x
2. Step 2: Convert to fraction form
   21,407.69/32,111.30 = 8,250.83/x
3. Step 3: Cross multiply
   21,407.69x = 32,111.30 × 8,250.83
4. Step 4: Simplify right side
   21,407.69x = 264,944,836.12
5. Step 5: Solve for x
   x = 264,944,836.12/21,407.69
6. Step 6: Final answer
   x = 12,376.15