Finding the Fourth Proportional to 11,422.72, 17,128.86 and 4,754.44

Step by Step Solution

1. Step 1: Write the proportion equation
   11,422.72 : 17,128.86 = 4,754.44 : x
2. Step 2: Convert to fraction form
   11,422.72/17,128.86 = 4,754.44/x
3. Step 3: Cross multiply
   11,422.72x = 17,128.86 × 4,754.44
4. Step 4: Simplify right side
   11,422.72x = 81,438,137.14
5. Step 5: Solve for x
   x = 81,438,137.14/11,422.72
6. Step 6: Final answer
   x = 7,129.49