Finding the Fourth Proportional to 12,723.79, 17,557.96 and 7,058.32

Step by Step Solution

1. Step 1: Write the proportion equation
   12,723.79 : 17,557.96 = 7,058.32 : x
2. Step 2: Convert to fraction form
   12,723.79/17,557.96 = 7,058.32/x
3. Step 3: Cross multiply
   12,723.79x = 17,557.96 × 7,058.32
4. Step 4: Simplify right side
   12,723.79x = 123,929,612.44
5. Step 5: Solve for x
   x = 123,929,612.44/12,723.79
6. Step 6: Final answer
   x = 9,739.99