Finding the Fourth Proportional to 12,760.56, 19,142.16 and 3,526.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,760.56 : 19,142.16 = 3,526.56 : x
2. Step 2: Convert to fraction form
   12,760.56/19,142.16 = 3,526.56/x
3. Step 3: Cross multiply
   12,760.56x = 19,142.16 × 3,526.56
4. Step 4: Simplify right side
   12,760.56x = 67,505,975.77
5. Step 5: Solve for x
   x = 67,505,975.77/12,760.56
6. Step 6: Final answer
   x = 5,290.20