Finding the Fourth Proportional to 9,826.70, 13,558.59 and 5,576.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,826.70 : 13,558.59 = 5,576.72 : x
2. Step 2: Convert to fraction form
   9,826.70/13,558.59 = 5,576.72/x
3. Step 3: Cross multiply
   9,826.70x = 13,558.59 × 5,576.72
4. Step 4: Simplify right side
   9,826.70x = 75,612,392.23
5. Step 5: Solve for x
   x = 75,612,392.23/9,826.70
6. Step 6: Final answer
   x = 7,694.59