Finding the Fourth Proportional to 15,417.27, 21,275.83 and 8,343.69

Step by Step Solution

1. Step 1: Write the proportion equation
   15,417.27 : 21,275.83 = 8,343.69 : x
2. Step 2: Convert to fraction form
   15,417.27/21,275.83 = 8,343.69/x
3. Step 3: Cross multiply
   15,417.27x = 21,275.83 × 8,343.69
4. Step 4: Simplify right side
   15,417.27x = 177,518,781.92
5. Step 5: Solve for x
   x = 177,518,781.92/15,417.27
6. Step 6: Final answer
   x = 11,514.28