Finding the Fourth Proportional to 7,216.72, 10,818.42 and 2,598.64

Step by Step Solution

1. Step 1: Write the proportion equation
   7,216.72 : 10,818.42 = 2,598.64 : x
2. Step 2: Convert to fraction form
   7,216.72/10,818.42 = 2,598.64/x
3. Step 3: Cross multiply
   7,216.72x = 10,818.42 × 2,598.64
4. Step 4: Simplify right side
   7,216.72x = 28,113,178.95
5. Step 5: Solve for x
   x = 28,113,178.95/7,216.72
6. Step 6: Final answer
   x = 3,895.56