Finding the Fourth Proportional to 11,942.01, 16,479.84 and 6,636.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,942.01 : 16,479.84 = 6,636.72 : x
2. Step 2: Convert to fraction form
   11,942.01/16,479.84 = 6,636.72/x
3. Step 3: Cross multiply
   11,942.01x = 16,479.84 × 6,636.72
4. Step 4: Simplify right side
   11,942.01x = 109,372,083.72
5. Step 5: Solve for x
   x = 109,372,083.72/11,942.01
6. Step 6: Final answer
   x = 9,158.60