Finding the Fourth Proportional to 9,509.91, 13,123.72 and 5,533.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,509.91 : 13,123.72 = 5,533.72 : x
2. Step 2: Convert to fraction form
   9,509.91/13,123.72 = 5,533.72/x
3. Step 3: Cross multiply
   9,509.91x = 13,123.72 × 5,533.72
4. Step 4: Simplify right side
   9,509.91x = 72,622,965.95
5. Step 5: Solve for x
   x = 72,622,965.95/9,509.91
6. Step 6: Final answer
   x = 7,636.56