Finding the Fourth Proportional to 12,317.37, 16,991.88 and 7,279.15

Step by Step Solution

1. Step 1: Write the proportion equation
   12,317.37 : 16,991.88 = 7,279.15 : x
2. Step 2: Convert to fraction form
   12,317.37/16,991.88 = 7,279.15/x
3. Step 3: Cross multiply
   12,317.37x = 16,991.88 × 7,279.15
4. Step 4: Simplify right side
   12,317.37x = 123,686,405.39
5. Step 5: Solve for x
   x = 123,686,405.39/12,317.37
6. Step 6: Final answer
   x = 10,041.63