Finding the Fourth Proportional to 12,462.49, 17,200.10 and 7,991.29

Step by Step Solution

1. Step 1: Write the proportion equation
   12,462.49 : 17,200.10 = 7,991.29 : x
2. Step 2: Convert to fraction form
   12,462.49/17,200.10 = 7,991.29/x
3. Step 3: Cross multiply
   12,462.49x = 17,200.10 × 7,991.29
4. Step 4: Simplify right side
   12,462.49x = 137,450,861.17
5. Step 5: Solve for x
   x = 137,450,861.17/12,462.49
6. Step 6: Final answer
   x = 11,029.17