Finding the Fourth Proportional to 12,663.50, 17,475.62 and 7,074.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,663.50 : 17,475.62 = 7,074.50 : x
2. Step 2: Convert to fraction form
   12,663.50/17,475.62 = 7,074.50/x
3. Step 3: Cross multiply
   12,663.50x = 17,475.62 × 7,074.50
4. Step 4: Simplify right side
   12,663.50x = 123,631,150.94
5. Step 5: Solve for x
   x = 123,631,150.94/12,663.50
6. Step 6: Final answer
   x = 9,762.80