Finding the Fourth Proportional to 7,123.83, 9,830.84 and 3,937.34

Step by Step Solution

1. Step 1: Write the proportion equation
   7,123.83 : 9,830.84 = 3,937.34 : x
2. Step 2: Convert to fraction form
   7,123.83/9,830.84 = 3,937.34/x
3. Step 3: Cross multiply
   7,123.83x = 9,830.84 × 3,937.34
4. Step 4: Simplify right side
   7,123.83x = 38,707,359.57
5. Step 5: Solve for x
   x = 38,707,359.57/7,123.83
6. Step 6: Final answer
   x = 5,433.50