Finding the Fourth Proportional to 12,677.51, 17,495.57 and 7,012.23

Step by Step Solution

1. Step 1: Write the proportion equation
   12,677.51 : 17,495.57 = 7,012.23 : x
2. Step 2: Convert to fraction form
   12,677.51/17,495.57 = 7,012.23/x
3. Step 3: Cross multiply
   12,677.51x = 17,495.57 × 7,012.23
4. Step 4: Simplify right side
   12,677.51x = 122,682,978.35
5. Step 5: Solve for x
   x = 122,682,978.35/12,677.51
6. Step 6: Final answer
   x = 9,677.22