Finding the Fourth Proportional to 9,162.47, 12,644.20 and 4,970.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,162.47 : 12,644.20 = 4,970.72 : x
2. Step 2: Convert to fraction form
   9,162.47/12,644.20 = 4,970.72/x
3. Step 3: Cross multiply
   9,162.47x = 12,644.20 × 4,970.72
4. Step 4: Simplify right side
   9,162.47x = 62,850,777.82
5. Step 5: Solve for x
   x = 62,850,777.82/9,162.47
6. Step 6: Final answer
   x = 6,859.59