Finding the Fourth Proportional to 7,245.17, 9,997.71 and 4,219.82

Step by Step Solution

1. Step 1: Write the proportion equation
   7,245.17 : 9,997.71 = 4,219.82 : x
2. Step 2: Convert to fraction form
   7,245.17/9,997.71 = 4,219.82/x
3. Step 3: Cross multiply
   7,245.17x = 9,997.71 × 4,219.82
4. Step 4: Simplify right side
   7,245.17x = 42,188,536.61
5. Step 5: Solve for x
   x = 42,188,536.61/7,245.17
6. Step 6: Final answer
   x = 5,822.99