Finding the Fourth Proportional to 9,042.80, 12,479.62 and 5,063.96

Step by Step Solution

1. Step 1: Write the proportion equation
   9,042.80 : 12,479.62 = 5,063.96 : x
2. Step 2: Convert to fraction form
   9,042.80/12,479.62 = 5,063.96/x
3. Step 3: Cross multiply
   9,042.80x = 12,479.62 × 5,063.96
4. Step 4: Simplify right side
   9,042.80x = 63,196,296.50
5. Step 5: Solve for x
   x = 63,196,296.50/9,042.80
6. Step 6: Final answer
   x = 6,988.58