Finding the Fourth Proportional to 10,748.28, 16,131.31 and 5,487.18

Step by Step Solution

1. Step 1: Write the proportion equation
   10,748.28 : 16,131.31 = 5,487.18 : x
2. Step 2: Convert to fraction form
   10,748.28/16,131.31 = 5,487.18/x
3. Step 3: Cross multiply
   10,748.28x = 16,131.31 × 5,487.18
4. Step 4: Simplify right side
   10,748.28x = 88,515,401.61
5. Step 5: Solve for x
   x = 88,515,401.61/10,748.28
6. Step 6: Final answer
   x = 8,235.31