Finding the Fourth Proportional to 12,723.65, 17,558.69 and 7,058.51

Step by Step Solution

1. Step 1: Write the proportion equation
   12,723.65 : 17,558.69 = 7,058.51 : x
2. Step 2: Convert to fraction form
   12,723.65/17,558.69 = 7,058.51/x
3. Step 3: Cross multiply
   12,723.65x = 17,558.69 × 7,058.51
4. Step 4: Simplify right side
   12,723.65x = 123,938,197.56
5. Step 5: Solve for x
   x = 123,938,197.56/12,723.65
6. Step 6: Final answer
   x = 9,740.77