Finding the Fourth Proportional to 12,515.80, 17,274.72 and 8,267.62

Step by Step Solution

1. Step 1: Write the proportion equation
   12,515.80 : 17,274.72 = 8,267.62 : x
2. Step 2: Convert to fraction form
   12,515.80/17,274.72 = 8,267.62/x
3. Step 3: Cross multiply
   12,515.80x = 17,274.72 × 8,267.62
4. Step 4: Simplify right side
   12,515.80x = 142,820,820.57
5. Step 5: Solve for x
   x = 142,820,820.57/12,515.80
6. Step 6: Final answer
   x = 11,411.24