Finding the Fourth Proportional to 3,510.32, 5,249.99 and 3,123.05

Step by Step Solution

1. Step 1: Write the proportion equation
   3,510.32 : 5,249.99 = 3,123.05 : x
2. Step 2: Convert to fraction form
   3,510.32/5,249.99 = 3,123.05/x
3. Step 3: Cross multiply
   3,510.32x = 5,249.99 × 3,123.05
4. Step 4: Simplify right side
   3,510.32x = 16,395,939.40
5. Step 5: Solve for x
   x = 16,395,939.40/3,510.32
6. Step 6: Final answer
   x = 4,670.79