Finding the Fourth Proportional to 9,255.93, 12,777.35 and 5,903.21

Step by Step Solution

1. Step 1: Write the proportion equation
   9,255.93 : 12,777.35 = 5,903.21 : x
2. Step 2: Convert to fraction form
   9,255.93/12,777.35 = 5,903.21/x
3. Step 3: Cross multiply
   9,255.93x = 12,777.35 × 5,903.21
4. Step 4: Simplify right side
   9,255.93x = 75,427,286.89
5. Step 5: Solve for x
   x = 75,427,286.89/9,255.93
6. Step 6: Final answer
   x = 8,149.08