Finding the Fourth Proportional to 5,562.88, 7,667.42 and 4,218.05

Step by Step Solution

1. Step 1: Write the proportion equation
   5,562.88 : 7,667.42 = 4,218.05 : x
2. Step 2: Convert to fraction form
   5,562.88/7,667.42 = 4,218.05/x
3. Step 3: Cross multiply
   5,562.88x = 7,667.42 × 4,218.05
4. Step 4: Simplify right side
   5,562.88x = 32,341,559.01
5. Step 5: Solve for x
   x = 32,341,559.01/5,562.88
6. Step 6: Final answer
   x = 5,813.82