Finding the Fourth Proportional to 12,647.64, 17,455.50 and 7,059

Step by Step Solution

1. Step 1: Write the proportion equation
   12,647.64 : 17,455.50 = 7,059 : x
2. Step 2: Convert to fraction form
   12,647.64/17,455.50 = 7,059/x
3. Step 3: Cross multiply
   12,647.64x = 17,455.50 × 7,059
4. Step 4: Simplify right side
   12,647.64x = 123,218,374.50
5. Step 5: Solve for x
   x = 123,218,374.50/12,647.64
6. Step 6: Final answer
   x = 9,742.40