Finding the Fourth Proportional to 12,799.27, 19,166.84 and 8,105.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,799.27 : 19,166.84 = 8,105.12 : x
2. Step 2: Convert to fraction form
   12,799.27/19,166.84 = 8,105.12/x
3. Step 3: Cross multiply
   12,799.27x = 19,166.84 × 8,105.12
4. Step 4: Simplify right side
   12,799.27x = 155,349,538.22
5. Step 5: Solve for x
   x = 155,349,538.22/12,799.27
6. Step 6: Final answer
   x = 12,137.37