Finding the Fourth Proportional to 7,420.69, 10,223.31 and 5,149.84

Step by Step Solution

1. Step 1: Write the proportion equation
   7,420.69 : 10,223.31 = 5,149.84 : x
2. Step 2: Convert to fraction form
   7,420.69/10,223.31 = 5,149.84/x
3. Step 3: Cross multiply
   7,420.69x = 10,223.31 × 5,149.84
4. Step 4: Simplify right side
   7,420.69x = 52,648,410.77
5. Step 5: Solve for x
   x = 52,648,410.77/7,420.69
6. Step 6: Final answer
   x = 7,094.81