Finding the Fourth Proportional to 12,443.66, 18,665.53 and 8,536.22

Step by Step Solution

1. Step 1: Write the proportion equation
   12,443.66 : 18,665.53 = 8,536.22 : x
2. Step 2: Convert to fraction form
   12,443.66/18,665.53 = 8,536.22/x
3. Step 3: Cross multiply
   12,443.66x = 18,665.53 × 8,536.22
4. Step 4: Simplify right side
   12,443.66x = 159,333,070.50
5. Step 5: Solve for x
   x = 159,333,070.50/12,443.66
6. Step 6: Final answer
   x = 12,804.36