Finding the Fourth Proportional to 11,422.10, 17,129.87 and 4,401.56

Step by Step Solution

1. Step 1: Write the proportion equation
   11,422.10 : 17,129.87 = 4,401.56 : x
2. Step 2: Convert to fraction form
   11,422.10/17,129.87 = 4,401.56/x
3. Step 3: Cross multiply
   11,422.10x = 17,129.87 × 4,401.56
4. Step 4: Simplify right side
   11,422.10x = 75,398,128.59
5. Step 5: Solve for x
   x = 75,398,128.59/11,422.10
6. Step 6: Final answer
   x = 6,601.07