Finding the Fourth Proportional to 12,559.81, 17,336.28 and 7,527.28

Step by Step Solution

1. Step 1: Write the proportion equation
   12,559.81 : 17,336.28 = 7,527.28 : x
2. Step 2: Convert to fraction form
   12,559.81/17,336.28 = 7,527.28/x
3. Step 3: Cross multiply
   12,559.81x = 17,336.28 × 7,527.28
4. Step 4: Simplify right side
   12,559.81x = 130,495,033.72
5. Step 5: Solve for x
   x = 130,495,033.72/12,559.81
6. Step 6: Final answer
   x = 10,389.89