Finding the Fourth Proportional to 9,370, 12,930.60 and 5,644.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,370 : 12,930.60 = 5,644.72 : x
2. Step 2: Convert to fraction form
   9,370/12,930.60 = 5,644.72/x
3. Step 3: Cross multiply
   9,370x = 12,930.60 × 5,644.72
4. Step 4: Simplify right side
   9,370x = 72,989,616.43
5. Step 5: Solve for x
   x = 72,989,616.43/9,370
6. Step 6: Final answer
   x = 7,789.71