Finding the Fourth Proportional to 10,505, 15,755.88 and 3,488.06

Step by Step Solution

1. Step 1: Write the proportion equation
   10,505 : 15,755.88 = 3,488.06 : x
2. Step 2: Convert to fraction form
   10,505/15,755.88 = 3,488.06/x
3. Step 3: Cross multiply
   10,505x = 15,755.88 × 3,488.06
4. Step 4: Simplify right side
   10,505x = 54,957,454.79
5. Step 5: Solve for x
   x = 54,957,454.79/10,505
6. Step 6: Final answer
   x = 5,231.55