Finding the Fourth Proportional to 12,802.64, 17,667.72 and 8,089.04

Step by Step Solution

1. Step 1: Write the proportion equation
   12,802.64 : 17,667.72 = 8,089.04 : x
2. Step 2: Convert to fraction form
   12,802.64/17,667.72 = 8,089.04/x
3. Step 3: Cross multiply
   12,802.64x = 17,667.72 × 8,089.04
4. Step 4: Simplify right side
   12,802.64x = 142,914,893.79
5. Step 5: Solve for x
   x = 142,914,893.79/12,802.64
6. Step 6: Final answer
   x = 11,162.92