Finding the Fourth Proportional to 11,951.12, 16,492.32 and 6,645.89

Step by Step Solution

1. Step 1: Write the proportion equation
   11,951.12 : 16,492.32 = 6,645.89 : x
2. Step 2: Convert to fraction form
   11,951.12/16,492.32 = 6,645.89/x
3. Step 3: Cross multiply
   11,951.12x = 16,492.32 × 6,645.89
4. Step 4: Simplify right side
   11,951.12x = 109,606,144.56
5. Step 5: Solve for x
   x = 109,606,144.56/11,951.12
6. Step 6: Final answer
   x = 9,171.20