Finding the Fourth Proportional to 7,499.25, 10,349.10 and 4,142.20

Step by Step Solution

1. Step 1: Write the proportion equation
   7,499.25 : 10,349.10 = 4,142.20 : x
2. Step 2: Convert to fraction form
   7,499.25/10,349.10 = 4,142.20/x
3. Step 3: Cross multiply
   7,499.25x = 10,349.10 × 4,142.20
4. Step 4: Simplify right side
   7,499.25x = 42,868,042.02
5. Step 5: Solve for x
   x = 42,868,042.02/7,499.25
6. Step 6: Final answer
   x = 5,716.31