Finding the Fourth Proportional to 12,279.48, 16,945.72 and 6,974.34

Step by Step Solution

1. Step 1: Write the proportion equation
   12,279.48 : 16,945.72 = 6,974.34 : x
2. Step 2: Convert to fraction form
   12,279.48/16,945.72 = 6,974.34/x
3. Step 3: Cross multiply
   12,279.48x = 16,945.72 × 6,974.34
4. Step 4: Simplify right side
   12,279.48x = 118,185,212.82
5. Step 5: Solve for x
   x = 118,185,212.82/12,279.48
6. Step 6: Final answer
   x = 9,624.61