Finding the Fourth Proportional to 5,338.71, 7,945.29 and 5,322.31

Step by Step Solution

1. Step 1: Write the proportion equation
   5,338.71 : 7,945.29 = 5,322.31 : x
2. Step 2: Convert to fraction form
   5,338.71/7,945.29 = 5,322.31/x
3. Step 3: Cross multiply
   5,338.71x = 7,945.29 × 5,322.31
4. Step 4: Simplify right side
   5,338.71x = 42,287,276.56
5. Step 5: Solve for x
   x = 42,287,276.56/5,338.71
6. Step 6: Final answer
   x = 7,920.88