Finding the Fourth Proportional to 9,164.56, 12,647.04 and 4,972.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,164.56 : 12,647.04 = 4,972.72 : x
2. Step 2: Convert to fraction form
   9,164.56/12,647.04 = 4,972.72/x
3. Step 3: Cross multiply
   9,164.56x = 12,647.04 × 4,972.72
4. Step 4: Simplify right side
   9,164.56x = 62,890,188.75
5. Step 5: Solve for x
   x = 62,890,188.75/9,164.56
6. Step 6: Final answer
   x = 6,862.32