Finding the Fourth Proportional to 12,914.96, 17,820.52 and 8,134.16

Step by Step Solution

1. Step 1: Write the proportion equation
   12,914.96 : 17,820.52 = 8,134.16 : x
2. Step 2: Convert to fraction form
   12,914.96/17,820.52 = 8,134.16/x
3. Step 3: Cross multiply
   12,914.96x = 17,820.52 × 8,134.16
4. Step 4: Simplify right side
   12,914.96x = 144,954,960.96
5. Step 5: Solve for x
   x = 144,954,960.96/12,914.96
6. Step 6: Final answer
   x = 11,223.80