Finding the Fourth Proportional to 11,115.28, 15,300.12 and 10,065.52

Step by Step Solution

1. Step 1: Write the proportion equation
   11,115.28 : 15,300.12 = 10,065.52 : x
2. Step 2: Convert to fraction form
   11,115.28/15,300.12 = 10,065.52/x
3. Step 3: Cross multiply
   11,115.28x = 15,300.12 × 10,065.52
4. Step 4: Simplify right side
   11,115.28x = 154,003,663.86
5. Step 5: Solve for x
   x = 154,003,663.86/11,115.28
6. Step 6: Final answer
   x = 13,855.13