Finding the Fourth Proportional to 21,610.83, 32,415.15 and 8,465.61

Step by Step Solution

1. Step 1: Write the proportion equation
   21,610.83 : 32,415.15 = 8,465.61 : x
2. Step 2: Convert to fraction form
   21,610.83/32,415.15 = 8,465.61/x
3. Step 3: Cross multiply
   21,610.83x = 32,415.15 × 8,465.61
4. Step 4: Simplify right side
   21,610.83x = 274,414,017.99
5. Step 5: Solve for x
   x = 274,414,017.99/21,610.83
6. Step 6: Final answer
   x = 12,697.99