Finding the Fourth Proportional to 12,861.56, 17,749.06 and 7,556.46

Step by Step Solution

1. Step 1: Write the proportion equation
   12,861.56 : 17,749.06 = 7,556.46 : x
2. Step 2: Convert to fraction form
   12,861.56/17,749.06 = 7,556.46/x
3. Step 3: Cross multiply
   12,861.56x = 17,749.06 × 7,556.46
4. Step 4: Simplify right side
   12,861.56x = 134,120,061.93
5. Step 5: Solve for x
   x = 134,120,061.93/12,861.56
6. Step 6: Final answer
   x = 10,427.98