Finding the Fourth Proportional to 9,404.25, 12,977.87 and 5,212.77

Step by Step Solution

1. Step 1: Write the proportion equation
   9,404.25 : 12,977.87 = 5,212.77 : x
2. Step 2: Convert to fraction form
   9,404.25/12,977.87 = 5,212.77/x
3. Step 3: Cross multiply
   9,404.25x = 12,977.87 × 5,212.77
4. Step 4: Simplify right side
   9,404.25x = 67,650,625.34
5. Step 5: Solve for x
   x = 67,650,625.34/9,404.25
6. Step 6: Final answer
   x = 7,193.62