Finding the Fourth Proportional to 11,354.40, 17,022.42 and 5,111.22

Step by Step Solution

1. Step 1: Write the proportion equation
   11,354.40 : 17,022.42 = 5,111.22 : x
2. Step 2: Convert to fraction form
   11,354.40/17,022.42 = 5,111.22/x
3. Step 3: Cross multiply
   11,354.40x = 17,022.42 × 5,111.22
4. Step 4: Simplify right side
   11,354.40x = 87,005,333.55
5. Step 5: Solve for x
   x = 87,005,333.55/11,354.40
6. Step 6: Final answer
   x = 7,662.70