Finding the Fourth Proportional to 5,538.42, 7,638.72 and 3,549.18

Step by Step Solution

1. Step 1: Write the proportion equation
   5,538.42 : 7,638.72 = 3,549.18 : x
2. Step 2: Convert to fraction form
   5,538.42/7,638.72 = 3,549.18/x
3. Step 3: Cross multiply
   5,538.42x = 7,638.72 × 3,549.18
4. Step 4: Simplify right side
   5,538.42x = 27,111,192.25
5. Step 5: Solve for x
   x = 27,111,192.25/5,538.42
6. Step 6: Final answer
   x = 4,895.11