Finding the Fourth Proportional to 5,538.15, 7,638.33 and 3,548.89

Step by Step Solution

1. Step 1: Write the proportion equation
   5,538.15 : 7,638.33 = 3,548.89 : x
2. Step 2: Convert to fraction form
   5,538.15/7,638.33 = 3,548.89/x
3. Step 3: Cross multiply
   5,538.15x = 7,638.33 × 3,548.89
4. Step 4: Simplify right side
   5,538.15x = 27,107,619.45
5. Step 5: Solve for x
   x = 27,107,619.45/5,538.15
6. Step 6: Final answer
   x = 4,894.70