Finding the Fourth Proportional to 8,789.79, 13,177.40 and 3,242.10

Step by Step Solution

1. Step 1: Write the proportion equation
   8,789.79 : 13,177.40 = 3,242.10 : x
2. Step 2: Convert to fraction form
   8,789.79/13,177.40 = 3,242.10/x
3. Step 3: Cross multiply
   8,789.79x = 13,177.40 × 3,242.10
4. Step 4: Simplify right side
   8,789.79x = 42,722,432.33
5. Step 5: Solve for x
   x = 42,722,432.33/8,789.79
6. Step 6: Final answer
   x = 4,860.46