Finding the Fourth Proportional to 17,561.40, 26,339.46 and 4,912.17

Step by Step Solution

1. Step 1: Write the proportion equation
   17,561.40 : 26,339.46 = 4,912.17 : x
2. Step 2: Convert to fraction form
   17,561.40/26,339.46 = 4,912.17/x
3. Step 3: Cross multiply
   17,561.40x = 26,339.46 × 4,912.17
4. Step 4: Simplify right side
   17,561.40x = 129,383,905.23
5. Step 5: Solve for x
   x = 129,383,905.23/17,561.40
6. Step 6: Final answer
   x = 7,367.52