Finding the Fourth Proportional to 7,820.72, 10,774.44 and 5,459.12

Step by Step Solution

1. Step 1: Write the proportion equation
   7,820.72 : 10,774.44 = 5,459.12 : x
2. Step 2: Convert to fraction form
   7,820.72/10,774.44 = 5,459.12/x
3. Step 3: Cross multiply
   7,820.72x = 10,774.44 × 5,459.12
4. Step 4: Simplify right side
   7,820.72x = 58,818,960.89
5. Step 5: Solve for x
   x = 58,818,960.89/7,820.72
6. Step 6: Final answer
   x = 7,520.91