Finding the Fourth Proportional to 12,462.18, 17,199.66 and 8,212.59

Step by Step Solution

1. Step 1: Write the proportion equation
   12,462.18 : 17,199.66 = 8,212.59 : x
2. Step 2: Convert to fraction form
   12,462.18/17,199.66 = 8,212.59/x
3. Step 3: Cross multiply
   12,462.18x = 17,199.66 × 8,212.59
4. Step 4: Simplify right side
   12,462.18x = 141,253,755.72
5. Step 5: Solve for x
   x = 141,253,755.72/12,462.18
6. Step 6: Final answer
   x = 11,334.59