Finding the Fourth Proportional to 11,456.10, 17,184.49 and 5,212.89

Step by Step Solution

1. Step 1: Write the proportion equation
   11,456.10 : 17,184.49 = 5,212.89 : x
2. Step 2: Convert to fraction form
   11,456.10/17,184.49 = 5,212.89/x
3. Step 3: Cross multiply
   11,456.10x = 17,184.49 × 5,212.89
4. Step 4: Simplify right side
   11,456.10x = 89,580,856.08
5. Step 5: Solve for x
   x = 89,580,856.08/11,456.10
6. Step 6: Final answer
   x = 7,819.49