Finding the Fourth Proportional to 5,742.85, 7,919.30 and 5,408.00

Step by Step Solution

1. Step 1: Write the proportion equation
   5,742.85 : 7,919.30 = 5,408.00 : x
2. Step 2: Convert to fraction form
   5,742.85/7,919.30 = 5,408.00/x
3. Step 3: Cross multiply
   5,742.85x = 7,919.30 × 5,408.00
4. Step 4: Simplify right side
   5,742.85x = 42,827,607.72
5. Step 5: Solve for x
   x = 42,827,607.72/5,742.85
6. Step 6: Final answer
   x = 7,457.56