Finding the Fourth Proportional to 9,071.28, 12,520.59 and 5,537.45

Step by Step Solution

1. Step 1: Write the proportion equation
   9,071.28 : 12,520.59 = 5,537.45 : x
2. Step 2: Convert to fraction form
   9,071.28/12,520.59 = 5,537.45/x
3. Step 3: Cross multiply
   9,071.28x = 12,520.59 × 5,537.45
4. Step 4: Simplify right side
   9,071.28x = 69,332,141.10
5. Step 5: Solve for x
   x = 69,332,141.10/9,071.28
6. Step 6: Final answer
   x = 7,643.04