Finding the Fourth Proportional to 11,160.21, 16,743.05 and 5,153.48

Step by Step Solution

1. Step 1: Write the proportion equation
   11,160.21 : 16,743.05 = 5,153.48 : x
2. Step 2: Convert to fraction form
   11,160.21/16,743.05 = 5,153.48/x
3. Step 3: Cross multiply
   11,160.21x = 16,743.05 × 5,153.48
4. Step 4: Simplify right side
   11,160.21x = 86,284,863.83
5. Step 5: Solve for x
   x = 86,284,863.83/11,160.21
6. Step 6: Final answer
   x = 7,731.47