Finding the Fourth Proportional to 10,887.37, 15,027.76 and 7,111.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,887.37 : 15,027.76 = 7,111.12 : x
2. Step 2: Convert to fraction form
   10,887.37/15,027.76 = 7,111.12/x
3. Step 3: Cross multiply
   10,887.37x = 15,027.76 × 7,111.12
4. Step 4: Simplify right side
   10,887.37x = 106,864,204.69
5. Step 5: Solve for x
   x = 106,864,204.69/10,887.37
6. Step 6: Final answer
   x = 9,815.43