Finding the Fourth Proportional to 14,040.16, 21,066.35 and 8,196.77

Step by Step Solution

1. Step 1: Write the proportion equation
   14,040.16 : 21,066.35 = 8,196.77 : x
2. Step 2: Convert to fraction form
   14,040.16/21,066.35 = 8,196.77/x
3. Step 3: Cross multiply
   14,040.16x = 21,066.35 × 8,196.77
4. Step 4: Simplify right side
   14,040.16x = 172,676,047.28
5. Step 5: Solve for x
   x = 172,676,047.28/14,040.16
6. Step 6: Final answer
   x = 12,298.72