Finding the Fourth Proportional to 12,816.67, 17,686.29 and 8,036.82

Step by Step Solution

1. Step 1: Write the proportion equation
   12,816.67 : 17,686.29 = 8,036.82 : x
2. Step 2: Convert to fraction form
   12,816.67/17,686.29 = 8,036.82/x
3. Step 3: Cross multiply
   12,816.67x = 17,686.29 × 8,036.82
4. Step 4: Simplify right side
   12,816.67x = 142,141,529.20
5. Step 5: Solve for x
   x = 142,141,529.20/12,816.67
6. Step 6: Final answer
   x = 11,090.36