Finding the Fourth Proportional to 12,116.39, 16,726.59 and 7,646.99

Step by Step Solution

1. Step 1: Write the proportion equation
   12,116.39 : 16,726.59 = 7,646.99 : x
2. Step 2: Convert to fraction form
   12,116.39/16,726.59 = 7,646.99/x
3. Step 3: Cross multiply
   12,116.39x = 16,726.59 × 7,646.99
4. Step 4: Simplify right side
   12,116.39x = 127,907,982.83
5. Step 5: Solve for x
   x = 127,907,982.83/12,116.39
6. Step 6: Final answer
   x = 10,556.61