Finding the Fourth Proportional to 11,642.86, 16,081.64 and 8,451.10

Step by Step Solution

1. Step 1: Write the proportion equation
   11,642.86 : 16,081.64 = 8,451.10 : x
2. Step 2: Convert to fraction form
   11,642.86/16,081.64 = 8,451.10/x
3. Step 3: Cross multiply
   11,642.86x = 16,081.64 × 8,451.10
4. Step 4: Simplify right side
   11,642.86x = 135,907,547.80
5. Step 5: Solve for x
   x = 135,907,547.80/11,642.86
6. Step 6: Final answer
   x = 11,673.04