Finding the Fourth Proportional to 11,478.09, 15,804.54 and 10,053.57

Step by Step Solution

1. Step 1: Write the proportion equation
   11,478.09 : 15,804.54 = 10,053.57 : x
2. Step 2: Convert to fraction form
   11,478.09/15,804.54 = 10,053.57/x
3. Step 3: Cross multiply
   11,478.09x = 15,804.54 × 10,053.57
4. Step 4: Simplify right side
   11,478.09x = 158,892,049.21
5. Step 5: Solve for x
   x = 158,892,049.21/11,478.09
6. Step 6: Final answer
   x = 13,843.07