Finding the Fourth Proportional to 9,072.72, 13,597.56 and 4,971.60

Step by Step Solution

1. Step 1: Write the proportion equation
   9,072.72 : 13,597.56 = 4,971.60 : x
2. Step 2: Convert to fraction form
   9,072.72/13,597.56 = 4,971.60/x
3. Step 3: Cross multiply
   9,072.72x = 13,597.56 × 4,971.60
4. Step 4: Simplify right side
   9,072.72x = 67,601,629.30
5. Step 5: Solve for x
   x = 67,601,629.30/9,072.72
6. Step 6: Final answer
   x = 7,451.09