Finding the Fourth Proportional to 8,753.48, 13,128.67 and 3,488.05

Step by Step Solution

1. Step 1: Write the proportion equation
   8,753.48 : 13,128.67 = 3,488.05 : x
2. Step 2: Convert to fraction form
   8,753.48/13,128.67 = 3,488.05/x
3. Step 3: Cross multiply
   8,753.48x = 13,128.67 × 3,488.05
4. Step 4: Simplify right side
   8,753.48x = 45,793,439.95
5. Step 5: Solve for x
   x = 45,793,439.95/8,753.48
6. Step 6: Final answer
   x = 5,231.46