Finding the Fourth Proportional to 12,656.64, 17,465.60 and 7,067.20

Step by Step Solution

1. Step 1: Write the proportion equation
   12,656.64 : 17,465.60 = 7,067.20 : x
2. Step 2: Convert to fraction form
   12,656.64/17,465.60 = 7,067.20/x
3. Step 3: Cross multiply
   12,656.64x = 17,465.60 × 7,067.20
4. Step 4: Simplify right side
   12,656.64x = 123,432,888.32
5. Step 5: Solve for x
   x = 123,432,888.32/12,656.64
6. Step 6: Final answer
   x = 9,752.42