Finding the Fourth Proportional to 7,290.72, 10,915.20 and 5,542.83

Step by Step Solution

1. Step 1: Write the proportion equation
   7,290.72 : 10,915.20 = 5,542.83 : x
2. Step 2: Convert to fraction form
   7,290.72/10,915.20 = 5,542.83/x
3. Step 3: Cross multiply
   7,290.72x = 10,915.20 × 5,542.83
4. Step 4: Simplify right side
   7,290.72x = 60,501,098.02
5. Step 5: Solve for x
   x = 60,501,098.02/7,290.72
6. Step 6: Final answer
   x = 8,298.37