Finding the Fourth Proportional to 12,488.86, 17,235.82 and 6,824.47

Step by Step Solution

1. Step 1: Write the proportion equation
   12,488.86 : 17,235.82 = 6,824.47 : x
2. Step 2: Convert to fraction form
   12,488.86/17,235.82 = 6,824.47/x
3. Step 3: Cross multiply
   12,488.86x = 17,235.82 × 6,824.47
4. Step 4: Simplify right side
   12,488.86x = 117,625,336.52
5. Step 5: Solve for x
   x = 117,625,336.52/12,488.86
6. Step 6: Final answer
   x = 9,418.42