Finding the Fourth Proportional to 11,348.10, 17,010.45 and 5,111.10

Step by Step Solution

1. Step 1: Write the proportion equation
   11,348.10 : 17,010.45 = 5,111.10 : x
2. Step 2: Convert to fraction form
   11,348.10/17,010.45 = 5,111.10/x
3. Step 3: Cross multiply
   11,348.10x = 17,010.45 × 5,111.10
4. Step 4: Simplify right side
   11,348.10x = 86,942,111.00
5. Step 5: Solve for x
   x = 86,942,111.00/11,348.10
6. Step 6: Final answer
   x = 7,661.38