Finding the Fourth Proportional to 9,472.98, 13,078.35 and 6,290.76

Step by Step Solution

1. Step 1: Write the proportion equation
   9,472.98 : 13,078.35 = 6,290.76 : x
2. Step 2: Convert to fraction form
   9,472.98/13,078.35 = 6,290.76/x
3. Step 3: Cross multiply
   9,472.98x = 13,078.35 × 6,290.76
4. Step 4: Simplify right side
   9,472.98x = 82,272,761.05
5. Step 5: Solve for x
   x = 82,272,761.05/9,472.98
6. Step 6: Final answer
   x = 8,684.99