Finding the Fourth Proportional to 12,663.18, 17,474.85 and 7,074.18

Step by Step Solution

1. Step 1: Write the proportion equation
   12,663.18 : 17,474.85 = 7,074.18 : x
2. Step 2: Convert to fraction form
   12,663.18/17,474.85 = 7,074.18/x
3. Step 3: Cross multiply
   12,663.18x = 17,474.85 × 7,074.18
4. Step 4: Simplify right side
   12,663.18x = 123,620,234.37
5. Step 5: Solve for x
   x = 123,620,234.37/12,663.18
6. Step 6: Final answer
   x = 9,762.18