Finding the Fourth Proportional to 7,123.98, 10,692.62 and 3,616.48

Step by Step Solution

1. Step 1: Write the proportion equation
   7,123.98 : 10,692.62 = 3,616.48 : x
2. Step 2: Convert to fraction form
   7,123.98/10,692.62 = 3,616.48/x
3. Step 3: Cross multiply
   7,123.98x = 10,692.62 × 3,616.48
4. Step 4: Simplify right side
   7,123.98x = 38,669,646.38
5. Step 5: Solve for x
   x = 38,669,646.38/7,123.98
6. Step 6: Final answer
   x = 5,428.10