Finding the Fourth Proportional to 9,777.51, 14,658.37 and 3,928.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,777.51 : 14,658.37 = 3,928.50 : x
2. Step 2: Convert to fraction form
   9,777.51/14,658.37 = 3,928.50/x
3. Step 3: Cross multiply
   9,777.51x = 14,658.37 × 3,928.50
4. Step 4: Simplify right side
   9,777.51x = 57,585,396.72
5. Step 5: Solve for x
   x = 57,585,396.72/9,777.51
6. Step 6: Final answer
   x = 5,889.58