Finding the Fourth Proportional to 9,777.68, 14,667.20 and 3,934.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,777.68 : 14,667.20 = 3,934.31 : x
2. Step 2: Convert to fraction form
   9,777.68/14,667.20 = 3,934.31/x
3. Step 3: Cross multiply
   9,777.68x = 14,667.20 × 3,934.31
4. Step 4: Simplify right side
   9,777.68x = 57,705,291.96
5. Step 5: Solve for x
   x = 57,705,291.96/9,777.68
6. Step 6: Final answer
   x = 5,901.74