Finding the Fourth Proportional to 10,837.52, 16,249.27 and 7,128.52

Step by Step Solution

1. Step 1: Write the proportion equation
   10,837.52 : 16,249.27 = 7,128.52 : x
2. Step 2: Convert to fraction form
   10,837.52/16,249.27 = 7,128.52/x
3. Step 3: Cross multiply
   10,837.52x = 16,249.27 × 7,128.52
4. Step 4: Simplify right side
   10,837.52x = 115,833,246.18
5. Step 5: Solve for x
   x = 115,833,246.18/10,837.52
6. Step 6: Final answer
   x = 10,688.17