Finding the Fourth Proportional to 19,758.42, 29,642.79 and 8,667.29

Step by Step Solution

1. Step 1: Write the proportion equation
   19,758.42 : 29,642.79 = 8,667.29 : x
2. Step 2: Convert to fraction form
   19,758.42/29,642.79 = 8,667.29/x
3. Step 3: Cross multiply
   19,758.42x = 29,642.79 × 8,667.29
4. Step 4: Simplify right side
   19,758.42x = 256,922,509.13
5. Step 5: Solve for x
   x = 256,922,509.13/19,758.42
6. Step 6: Final answer
   x = 13,003.19