Finding the Fourth Proportional to 5,579.58, 7,692.12 and 5,407.05

Step by Step Solution

1. Step 1: Write the proportion equation
   5,579.58 : 7,692.12 = 5,407.05 : x
2. Step 2: Convert to fraction form
   5,579.58/7,692.12 = 5,407.05/x
3. Step 3: Cross multiply
   5,579.58x = 7,692.12 × 5,407.05
4. Step 4: Simplify right side
   5,579.58x = 41,591,677.45
5. Step 5: Solve for x
   x = 41,591,677.45/5,579.58
6. Step 6: Final answer
   x = 7,454.27