Finding the Fourth Proportional to 7,191.27, 10,779.60 and 5,456.25

Step by Step Solution

1. Step 1: Write the proportion equation
   7,191.27 : 10,779.60 = 5,456.25 : x
2. Step 2: Convert to fraction form
   7,191.27/10,779.60 = 5,456.25/x
3. Step 3: Cross multiply
   7,191.27x = 10,779.60 × 5,456.25
4. Step 4: Simplify right side
   7,191.27x = 58,816,192.50
5. Step 5: Solve for x
   x = 58,816,192.50/7,191.27
6. Step 6: Final answer
   x = 8,178.83