Finding the Fourth Proportional to 12,499.52, 17,225.60 and 8,956.58

Step by Step Solution

1. Step 1: Write the proportion equation
   12,499.52 : 17,225.60 = 8,956.58 : x
2. Step 2: Convert to fraction form
   12,499.52/17,225.60 = 8,956.58/x
3. Step 3: Cross multiply
   12,499.52x = 17,225.60 × 8,956.58
4. Step 4: Simplify right side
   12,499.52x = 154,282,333.54
5. Step 5: Solve for x
   x = 154,282,333.54/12,499.52
6. Step 6: Final answer
   x = 12,343.07