Finding the Fourth Proportional to 12,976.16, 17,906.03 and 7,309.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,976.16 : 17,906.03 = 7,309.10 : x
2. Step 2: Convert to fraction form
   12,976.16/17,906.03 = 7,309.10/x
3. Step 3: Cross multiply
   12,976.16x = 17,906.03 × 7,309.10
4. Step 4: Simplify right side
   12,976.16x = 130,876,927.33
5. Step 5: Solve for x
   x = 130,876,927.33/12,976.16
6. Step 6: Final answer
   x = 10,085.95