Finding the Fourth Proportional to 6,123.70, 9,177.86 and 3,312.42

Step by Step Solution

1. Step 1: Write the proportion equation
   6,123.70 : 9,177.86 = 3,312.42 : x
2. Step 2: Convert to fraction form
   6,123.70/9,177.86 = 3,312.42/x
3. Step 3: Cross multiply
   6,123.70x = 9,177.86 × 3,312.42
4. Step 4: Simplify right side
   6,123.70x = 30,400,927.02
5. Step 5: Solve for x
   x = 30,400,927.02/6,123.70
6. Step 6: Final answer
   x = 4,964.47