Finding the Fourth Proportional to 12,642.48, 17,444.64 and 7,336.24

Step by Step Solution

1. Step 1: Write the proportion equation
   12,642.48 : 17,444.64 = 7,336.24 : x
2. Step 2: Convert to fraction form
   12,642.48/17,444.64 = 7,336.24/x
3. Step 3: Cross multiply
   12,642.48x = 17,444.64 × 7,336.24
4. Step 4: Simplify right side
   12,642.48x = 127,978,065.75
5. Step 5: Solve for x
   x = 127,978,065.75/12,642.48
6. Step 6: Final answer
   x = 10,122.86