Finding the Fourth Proportional to 11,451.30, 17,162.37 and 5,209.26

Step by Step Solution

1. Step 1: Write the proportion equation
   11,451.30 : 17,162.37 = 5,209.26 : x
2. Step 2: Convert to fraction form
   11,451.30/17,162.37 = 5,209.26/x
3. Step 3: Cross multiply
   11,451.30x = 17,162.37 × 5,209.26
4. Step 4: Simplify right side
   11,451.30x = 89,403,247.55
5. Step 5: Solve for x
   x = 89,403,247.55/11,451.30
6. Step 6: Final answer
   x = 7,807.26