Finding the Fourth Proportional to 9,403.75, 12,977.31 and 5,212.27

Step by Step Solution

1. Step 1: Write the proportion equation
   9,403.75 : 12,977.31 = 5,212.27 : x
2. Step 2: Convert to fraction form
   9,403.75/12,977.31 = 5,212.27/x
3. Step 3: Cross multiply
   9,403.75x = 12,977.31 × 5,212.27
4. Step 4: Simplify right side
   9,403.75x = 67,641,243.59
5. Step 5: Solve for x
   x = 67,641,243.59/9,403.75
6. Step 6: Final answer
   x = 7,193.01