Finding the Fourth Proportional to 12,560.72, 17,333.88 and 6,971.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,560.72 : 17,333.88 = 6,971.72 : x
2. Step 2: Convert to fraction form
   12,560.72/17,333.88 = 6,971.72/x
3. Step 3: Cross multiply
   12,560.72x = 17,333.88 × 6,971.72
4. Step 4: Simplify right side
   12,560.72x = 120,846,957.87
5. Step 5: Solve for x
   x = 120,846,957.87/12,560.72
6. Step 6: Final answer
   x = 9,621.02