Finding the Fourth Proportional to 8,748.72, 13,128.39 and 3,554.46

Step by Step Solution

1. Step 1: Write the proportion equation
   8,748.72 : 13,128.39 = 3,554.46 : x
2. Step 2: Convert to fraction form
   8,748.72/13,128.39 = 3,554.46/x
3. Step 3: Cross multiply
   8,748.72x = 13,128.39 × 3,554.46
4. Step 4: Simplify right side
   8,748.72x = 46,664,337.12
5. Step 5: Solve for x
   x = 46,664,337.12/8,748.72
6. Step 6: Final answer
   x = 5,333.85