Finding the Fourth Proportional to 9,071.52, 13,580.88 and 5,311.92

Step by Step Solution

1. Step 1: Write the proportion equation
   9,071.52 : 13,580.88 = 5,311.92 : x
2. Step 2: Convert to fraction form
   9,071.52/13,580.88 = 5,311.92/x
3. Step 3: Cross multiply
   9,071.52x = 13,580.88 × 5,311.92
4. Step 4: Simplify right side
   9,071.52x = 72,140,548.09
5. Step 5: Solve for x
   x = 72,140,548.09/9,071.52
6. Step 6: Final answer
   x = 7,952.42