Finding the Fourth Proportional to 21,652.02, 29,875.71 and 12,218.82

Step by Step Solution

1. Step 1: Write the proportion equation
   21,652.02 : 29,875.71 = 12,218.82 : x
2. Step 2: Convert to fraction form
   21,652.02/29,875.71 = 12,218.82/x
3. Step 3: Cross multiply
   21,652.02x = 29,875.71 × 12,218.82
4. Step 4: Simplify right side
   21,652.02x = 365,045,922.86
5. Step 5: Solve for x
   x = 365,045,922.86/21,652.02
6. Step 6: Final answer
   x = 16,859.67