Finding the Fourth Proportional to 9,042.88, 12,478.37 and 5,063.15

Step by Step Solution

1. Step 1: Write the proportion equation
   9,042.88 : 12,478.37 = 5,063.15 : x
2. Step 2: Convert to fraction form
   9,042.88/12,478.37 = 5,063.15/x
3. Step 3: Cross multiply
   9,042.88x = 12,478.37 × 5,063.15
4. Step 4: Simplify right side
   9,042.88x = 63,179,771.36
5. Step 5: Solve for x
   x = 63,179,771.36/9,042.88
6. Step 6: Final answer
   x = 6,986.69