Finding the Fourth Proportional to 11,153.70, 15,300.33 and 10,550.39

Step by Step Solution

1. Step 1: Write the proportion equation
   11,153.70 : 15,300.33 = 10,550.39 : x
2. Step 2: Convert to fraction form
   11,153.70/15,300.33 = 10,550.39/x
3. Step 3: Cross multiply
   11,153.70x = 15,300.33 × 10,550.39
4. Step 4: Simplify right side
   11,153.70x = 161,424,332.56
5. Step 5: Solve for x
   x = 161,424,332.56/11,153.70
6. Step 6: Final answer
   x = 14,472.72