Finding the Fourth Proportional to 7,123.01, 9,830.33 and 3,936.59

Step by Step Solution

1. Step 1: Write the proportion equation
   7,123.01 : 9,830.33 = 3,936.59 : x
2. Step 2: Convert to fraction form
   7,123.01/9,830.33 = 3,936.59/x
3. Step 3: Cross multiply
   7,123.01x = 9,830.33 × 3,936.59
4. Step 4: Simplify right side
   7,123.01x = 38,697,909.94
5. Step 5: Solve for x
   x = 38,697,909.94/7,123.01
6. Step 6: Final answer
   x = 5,432.81