Finding the Fourth Proportional to 12,724.84, 17,560.42 and 7,059.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,724.84 : 17,560.42 = 7,059.72 : x
2. Step 2: Convert to fraction form
   12,724.84/17,560.42 = 7,059.72/x
3. Step 3: Cross multiply
   12,724.84x = 17,560.42 × 7,059.72
4. Step 4: Simplify right side
   12,724.84x = 123,971,630.63
5. Step 5: Solve for x
   x = 123,971,630.63/12,724.84
6. Step 6: Final answer
   x = 9,742.49