Finding the Fourth Proportional to 9,042.86, 12,478.92 and 5,064.22

Step by Step Solution

1. Step 1: Write the proportion equation
   9,042.86 : 12,478.92 = 5,064.22 : x
2. Step 2: Convert to fraction form
   9,042.86/12,478.92 = 5,064.22/x
3. Step 3: Cross multiply
   9,042.86x = 12,478.92 × 5,064.22
4. Step 4: Simplify right side
   9,042.86x = 63,195,996.24
5. Step 5: Solve for x
   x = 63,195,996.24/9,042.86
6. Step 6: Final answer
   x = 6,988.50