Finding the Fourth Proportional to 8,692.05, 13,038.89 and 3,146.79

Step by Step Solution

1. Step 1: Write the proportion equation
   8,692.05 : 13,038.89 = 3,146.79 : x
2. Step 2: Convert to fraction form
   8,692.05/13,038.89 = 3,146.79/x
3. Step 3: Cross multiply
   8,692.05x = 13,038.89 × 3,146.79
4. Step 4: Simplify right side
   8,692.05x = 41,030,632.93
5. Step 5: Solve for x
   x = 41,030,632.93/8,692.05
6. Step 6: Final answer
   x = 4,720.48