Finding the Fourth Proportional to 4,019.68, 5,572.84 and 3,877.12

Step by Step Solution

1. Step 1: Write the proportion equation
   4,019.68 : 5,572.84 = 3,877.12 : x
2. Step 2: Convert to fraction form
   4,019.68/5,572.84 = 3,877.12/x
3. Step 3: Cross multiply
   4,019.68x = 5,572.84 × 3,877.12
4. Step 4: Simplify right side
   4,019.68x = 21,606,569.42
5. Step 5: Solve for x
   x = 21,606,569.42/4,019.68
6. Step 6: Final answer
   x = 5,375.20