Finding the Fourth Proportional to 11,945.95, 17,910.72 and 5,279.24

Step by Step Solution

1. Step 1: Write the proportion equation
   11,945.95 : 17,910.72 = 5,279.24 : x
2. Step 2: Convert to fraction form
   11,945.95/17,910.72 = 5,279.24/x
3. Step 3: Cross multiply
   11,945.95x = 17,910.72 × 5,279.24
4. Step 4: Simplify right side
   11,945.95x = 94,555,034.23
5. Step 5: Solve for x
   x = 94,555,034.23/11,945.95
6. Step 6: Final answer
   x = 7,915.24