Finding the Fourth Proportional to 9,290.07, 12,816 and 5,931.18

Step by Step Solution

1. Step 1: Write the proportion equation
   9,290.07 : 12,816 = 5,931.18 : x
2. Step 2: Convert to fraction form
   9,290.07/12,816 = 5,931.18/x
3. Step 3: Cross multiply
   9,290.07x = 12,816 × 5,931.18
4. Step 4: Simplify right side
   9,290.07x = 76,014,002.88
5. Step 5: Solve for x
   x = 76,014,002.88/9,290.07
6. Step 6: Final answer
   x = 8,182.29