Finding the Fourth Proportional to 7,335.74, 10,123.23 and 3,978.50

Step by Step Solution

1. Step 1: Write the proportion equation
   7,335.74 : 10,123.23 = 3,978.50 : x
2. Step 2: Convert to fraction form
   7,335.74/10,123.23 = 3,978.50/x
3. Step 3: Cross multiply
   7,335.74x = 10,123.23 × 3,978.50
4. Step 4: Simplify right side
   7,335.74x = 40,275,270.56
5. Step 5: Solve for x
   x = 40,275,270.56/7,335.74
6. Step 6: Final answer
   x = 5,490.28