Finding the Fourth Proportional to 11,520.05, 17,282.81 and 3,728.86

Step by Step Solution

1. Step 1: Write the proportion equation
   11,520.05 : 17,282.81 = 3,728.86 : x
2. Step 2: Convert to fraction form
   11,520.05/17,282.81 = 3,728.86/x
3. Step 3: Cross multiply
   11,520.05x = 17,282.81 × 3,728.86
4. Step 4: Simplify right side
   11,520.05x = 64,445,145.01
5. Step 5: Solve for x
   x = 64,445,145.01/11,520.05
6. Step 6: Final answer
   x = 5,594.17