Finding the Fourth Proportional to 9,400.33, 12,973.83 and 5,420.66

Step by Step Solution

1. Step 1: Write the proportion equation
   9,400.33 : 12,973.83 = 5,420.66 : x
2. Step 2: Convert to fraction form
   9,400.33/12,973.83 = 5,420.66/x
3. Step 3: Cross multiply
   9,400.33x = 12,973.83 × 5,420.66
4. Step 4: Simplify right side
   9,400.33x = 70,326,721.33
5. Step 5: Solve for x
   x = 70,326,721.33/9,400.33
6. Step 6: Final answer
   x = 7,481.31