Finding the Fourth Proportional to 11,145.72, 15,397.83 and 7,326.47

Step by Step Solution

1. Step 1: Write the proportion equation
   11,145.72 : 15,397.83 = 7,326.47 : x
2. Step 2: Convert to fraction form
   11,145.72/15,397.83 = 7,326.47/x
3. Step 3: Cross multiply
   11,145.72x = 15,397.83 × 7,326.47
4. Step 4: Simplify right side
   11,145.72x = 112,811,739.56
5. Step 5: Solve for x
   x = 112,811,739.56/11,145.72
6. Step 6: Final answer
   x = 10,121.53