Finding the Fourth Proportional to 5,457.56, 7,526.61 and 3,944.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,457.56 : 7,526.61 = 3,944.72 : x
2. Step 2: Convert to fraction form
   5,457.56/7,526.61 = 3,944.72/x
3. Step 3: Cross multiply
   5,457.56x = 7,526.61 × 3,944.72
4. Step 4: Simplify right side
   5,457.56x = 29,690,387.82
5. Step 5: Solve for x
   x = 29,690,387.82/5,457.56
6. Step 6: Final answer
   x = 5,440.24