Finding the Fourth Proportional to 12,856.52, 17,742.72 and 7,552.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,856.52 : 17,742.72 = 7,552.88 : x
2. Step 2: Convert to fraction form
   12,856.52/17,742.72 = 7,552.88/x
3. Step 3: Cross multiply
   12,856.52x = 17,742.72 × 7,552.88
4. Step 4: Simplify right side
   12,856.52x = 134,008,635.03
5. Step 5: Solve for x
   x = 134,008,635.03/12,856.52
6. Step 6: Final answer
   x = 10,423.40