Finding the Fourth Proportional to 11,451.98, 17,174.73 and 5,208.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,451.98 : 17,174.73 = 5,208.50 : x
2. Step 2: Convert to fraction form
   11,451.98/17,174.73 = 5,208.50/x
3. Step 3: Cross multiply
   11,451.98x = 17,174.73 × 5,208.50
4. Step 4: Simplify right side
   11,451.98x = 89,454,581.21
5. Step 5: Solve for x
   x = 89,454,581.21/11,451.98
6. Step 6: Final answer
   x = 7,811.28