Finding the Fourth Proportional to 7,539.21, 10,404.38 and 5,647.45

Step by Step Solution

1. Step 1: Write the proportion equation
   7,539.21 : 10,404.38 = 5,647.45 : x
2. Step 2: Convert to fraction form
   7,539.21/10,404.38 = 5,647.45/x
3. Step 3: Cross multiply
   7,539.21x = 10,404.38 × 5,647.45
4. Step 4: Simplify right side
   7,539.21x = 58,758,215.83
5. Step 5: Solve for x
   x = 58,758,215.83/7,539.21
6. Step 6: Final answer
   x = 7,793.68